Let's not overstate Malkin putproducing Crosby though.
This is a version of Crosby thats at the tail end of his prime. He finished 10th in points in 2017-18. At the time, that was the worst season of his career in terms of point and PPG placement (not counting injured seasons where he was dominating in terms of points per game)
And to this day, it remains one of the weaker seasons of his career.
Either way, I really don't see an argument for Malkin being a hart finalist. McDavid and Mackinnon beat him in actual production and per game numbers while the players just below him were much better two way players (Giroux, Kopitar)
I actually like this season for Crosby. He changed around ~2015-2016, when he had that horrible start, but it culminated in a cup/smythe/hart finalist by the end.
In 2017-2018 - Pens, back to back champs, are stumbling big-time and at risk of missing playoffs ~halfway into season. Malkin is out injured for a few games...Crosby puts the team on his back and helps turn season around, with a few huge multi-point games in successions that starts a big win streak. Malkin eventually returns - he gets hot and both him and Crosby go on a run...and eventually, Pens are safely back in playoff spot, Crosby does slow down. Malkin finishes season stronger...but in meantime Pens safely make playoffs, and Crosby is a beast through 2 rounds of playoffs.
In 2016-2017 - all year long Crosby/McDavid was a tight race for Ross (Crosby missed ~5 games to injury at start of season, but led in ppg most of the way and seemed likely to catch McDavid) - but then at the very end of season slows down (his team safely in playoffs) and McDavid goes off and wins the Ross....and Crosby enters playoffs fresh, wins the smythe.
Crosby finished high in scoring races but hasn't been a legitimate threat to win the Ross since 2017-2018. But in almost every year since - there's a time ~mid-year where Pens are stubmling big time, and Crosby goes on a bender scoring as much as league leaders for a ~month or so and helps save Penguins seasons and bring them back to playoffs. He may not be winning Rosses - but he's still providing a lot of value to his team. In a thread about "hart" - I don't think it's fair to discard his season too quickly as a bad season.
Obviously not saying Crosby should have won, nor been anywhere near the Hart in 2017-2018 - I'm just saying I don't dislike his season as much as others.
To me - 2017-2018 Hart should have been 1. Kucherov 2. MacKinnon - I'd probably be ok with Hall at #3.