Right or even the fact that McDavid still provides the most "value" to his team. It's not even close actually. He has something like 45% of his teams goals he is involved in. But EDM will not make the playoffs and he will not win the award.
Taking Kucherov off the Lightning would still result in them being a playoff team. TB would not drop 24 points out of a playoff spot. However, I see your point because he is indeed a big reason they are the #1 team. The argument is entirely hypothetical and that's why it's hard for people to agree with each other. I don't think Kucherov is a bad choice, I just think Hall brings more value IMO.
43.2%, that's a pretty ridiculous number and I'm not even a McDavid fan. Unfortunately (as you said), the Oil falling so far out of the playoff picture will hurt him too much to garner too much serious consideration
Kucherov was a one man team last year and still put up great numbers. So I wouldn't take away what he's done this year just because his team is stacked.
It's too difficult for the voters to acknowledge that when he's got another top 10 forward, a top 3 defensemen (possible/probable Norris winner), and probably the Vezina winner on the same team along with other very good players like Point. It's going to be the same for the Penguins, when you play on a team with a bunch of really good players, your contribution does not stand out as much for this kind of an award.
The Hart is really going to go to the guy that drags his team into the playoffs without as heavy of contributions from others, for that reason my three finalists are:
1. MacKinnon because are you serious? The Avs were actual trash last year and he put the team on his back doh (37.6% of team points he has contributed to)
2. Hall, only because of the massive disparity between him and the #2 guy on the Devils, and his consistency. However, the Devils overachieved earlier in the season and are regressing hard towards the mean now and will probably miss the playoffs, so he would likely fall off this list if that happens
3. Ovechkin, he's the only wing scoring any damn goals for the Caps and he's doing at least twice as well as the next highest goal scorer (Kuzy). The next closest wing in goals for the Caps is Brett Connolly (lol) with 14 and Oshie with 12 (blech), not to mention he leads the league in even-strength goals with 28 and the Caps have worse than shoddy defense and goaltending for the most part
You could also easily make an argument for Wheeler or Giroux, but their stats are heavily loaded with assists and not as spread as the above players. Bergeron, while I would love to see him get it, suffers from the same fate as the Penguins/Lightning where his entire line is ridiculous.