Don't bother. If he/she is still whinging about this all over again, despite having this explained quite clearly, then it's useless at this juncture.
Ummm, it's you two who typify the whiny fan. And the ones who need continuing explaining as to reality.
Specifically, and to be fair, I am attributing some positions commonly found here that may not have come from you, but the typical, over emotional, under hockey educated fan, tends to think in black and white, as in, "Fire the GM", "Fire the Coach," Get rid of our top players," and "Rebuild the bottom six". No amount of data is going to sway you from your opinions. And, it is never that easy. A whole bunch of factors go into the success of a season.
If you were TG, and paying the bills, the reality of the situation is that Nill is a top 7 (or to you, as low as maybe 12) GM, certainly in the upper half of the league, probably top third. The real world question when considering replacing him is whether you will get that top 3 all time GM, or actually get one that may be up to significantly worse. Of course, any Hockey News ranking is skewed, but an ESPN list of possible GM candidates, with no experience, is golden.
I believe the chances are that the GM quality will go down if Nill is replaced, but we won't know, of course, until it happens. I also believe the solution is in tweaking the weak spots, which they have recently done recently, promoting Pevs and adding a scout. Whether those are the right moves, only time will tell.
The short version is of course you compare Nill to other GMs when determining how to move forward. It is you that is comparing him to some mythical, all-time great GM who never blew a draft pick, and won Stanley Cups nearly every year. His results have been top 10 based on wins, SC performance, and many other measures of success. Even if you think his early drafts and later trade results (which admittedly have been less dramatic now that they are a cap strapped team and can't take advantage of other teams with cap issues.) In other words, his performance is about what you would expect it to be if you considered all the facts, other than your whiny emotions as a fan.
Ditto, Bones. A thread on another section of this forum asks who are the worst coaches. (Given how enthralled you are with fan opinion, I think you would endorse these) and Bones did not get a vote or mention when I last looked at the thread. He may be a middling coach, but he is also one that took us to the finals with our supposed crap roster built by Nill, but of course, to you, that was merely dumb luck. While I know coaches have gotten fired after even a Cup win (Boudreau, but I think salary had something to do with that) it sure isn't typical. Bones probably hasn't forgotten anything. He had to deal with injuries, and yes, got back to being conservative, which is a time tested way to compete when other teams have better and healthier rosters.
As to the bottom six, the proper way to rebuild that is to add a top six forward and demote everyone down a line where they compete against lesser players. As to getting rid of top players, the contracts are what they are. I am sure we can go back and find some of us supporting signing Benn and Seguin, and others who realized that the final few years of each would be poor value. That said, if you are TG, and trying to sell tickets, it is hard to let your few recognizable stars go, and looking at teams that continually do it, how do they fare, a la, Buffalo or Ottowa, which seem to be in perpetual blow it up state. Is Buffalo going to be better without Eichel?
As I have said many times, it's easy to propose firing eveyrone, especially since internet fans have no responsibility for results of the change. If you are going to promote total blowups, you really should have a better (and realistic) replacement in mind.
As always, just MHO. You are certainly entitled to bitch, as a fan, but I will continue to point out when and where I think it is over the top unrealistic. Of course, the minute I post this, the Stars will announce that Nill and Bones have been let go, and you would be able to have a laugh at my expense.
