On any team not in Pitt of DC he's the franchise player in this era. None of htose guys you've listed fit tat bill, except maybe St. Louis. Plus also Friedman said he's a lock. So I'm sticking to my guns.
That's rose-colored glasses on your part. I love Backstrom, but he's not a tier above many of the guys listed, and certainly not above Mogilny (who I think his exclusion from the Hall is absurd). Doug Weight was Edmonton's franchise player in the late 90s. Keith Tkachuk was the franchise player in Phoenix (and played second fiddle only to Selanne in Winnipeg before that franchise moved). Jeremy Roenick was definitely Chicago's franchise player in the early 90s, leading them in scoring several seasons in a row.
Backstrom is a great talent, but large chunks of the hockey world see him as second fiddle to Ovechkin. The same people who vote on the end of year awards, all-star teams, etc. are part of the Hall of Fame process, and Backstrom didn't get recognized with those accolades. He would basically only get a few pity votes from local writers. His best Selke finish was only 7th (2017). His best Lady Byng finish was only 15th (2020). He never once was named a first or second team All-Star in the end of season voting. Even at his very peak, he was still viewed as somewhere between the 4th and 10th best center in the league, clearly behind guys like Crosby, Malkin, Sedin (and eventually McDavid and Matthews). He wasn't even viewed as the clear cut best center in the 1st round of the 2006 draft, with Jonathan Toews receiving tons of hype during Chicago's peak years and Claude Giroux looking like he'll win the longevity battle (coming off a 79 point campaign last year and with another point/game start to this season).
I think it's possible he ends up in the Hall of Fame. There are some very clearly lesser players in there (Guy Carbonneau for example). But I don't think it's a slam dunk by any means. His resume just doesn't have anything that's going to push him over the edge as an easy inclusion.
Career points are nice milestones and make it easy, but placement among your peers is what demonstrates elite talent and Backstrom is like... what, top 10 for the entirety of his time in the game or something? You can count the number of players who outproduced him on your digits, I know that.
If he's not getting in there are a lot of players so far in the last 20 or so years that shouldn't be either, and I don't think they're going to start playing it the MLB way where it's just like "you know what? This year it's none of you, suck it, you don't deserve to be in the cool guy club" because the writers are contrarian bitches all the time.
Once names we recognize as his contemporaries start getting picked off the list it probably shouldn't be very long before his gets called unless being overshadowed by the greatest goal scorer of all time when it comes to MVP voting and the like is that big of a deal.
I did some sniffing around and it seems like a lot of people are willing to put Getzlaf in the Hall, if you can do that you can't really ignore Backstrom.
As I said in the response to Calicaps above, I just don't think the voters see him as clear cut above his peers as you seem to. It's not just MVP voting, but other awards he should have been contending for that he tended not to have a great finish. And HHoF voters definitely care about individual accolades.
Sure, if you look at stats from his rookie year until now he does well. But that's also a little disingenous, as shifting that frame of reference a year or two in either direction can alter the standings significantly. Starting it in 2006-07 does well for Backstrom (7th in the league in that stretch), but it puts someone at Tavares (2009-10 rookie) at a 3 year disadvantage, and also excludes the 125 point season that Joe Thornton had right before Backstrom enterred the league (or his 101 point performance in 2002-03). I don't think any of us would seriously argue that Backstrom is more worthy of the Hall than Joe Thornton. Plus guys like Tavares, Giroux, and Pavelski are all likely to pass Backstrom on that list this season.
I'm not sure Getzlaf gets in, either. But him being the undisputed face of his franchise, having a strong playoff performer reputation, and a 2nd place finish in the Hart voting in 2013-14 might give him an edge over Backstrom.
If you list out the top centers of this post-lockout to COVID era of hockey, Backstrom is fighting tooth and nail to just hang onto the top 5. He's definitely not a universal pick. Crosby, Malkin, Sedin, and Thornton are above him for sure. Kopitar has been quietly dominant for that same stretch of time, has Nicky beat on career stats, has one more Cup, and has 2x Selke's, 2x Byng's, and 1x Messier trophy. Bergeron was the Selke machine. Stamkos has better career stats, multiple Rockets, and more Cups. Toews has the team accolades, the Selke, the Smythe, the Messier, and was in that silly top 100 players of all time thing. And if someone like Giroux, Pavelski, or Tavares manages a Cup, it will be a lot harder to justify keeping Nicky above them as well. Is a guy who's viewed as, say, the 8th or 10th best center of his era really a Hall of Fame shoo-in?