The problem is that none of this stuff matters come playoff time, not only that but Matthews has glaring flaws that go beyond just his play:
1.He is a monotone passionless guy, not only that but in his first season he threw his teammates under the bus, he could've clarified that he too was a passenger, he didn't because he didn't feel that way (he didn't think of himself as a passenger), even though objectively speaking during his Leaf career he has been passenger like in way too many playoff games, see:
Is 0 goals/3 points in 7 game 7s passenger like?
2.The injuries concern is a pretty big one, this is two playoffs in a row he is injured, he has been injured a good deal in seasons before and he is only getting older
3.The greed factor of the guy is very high, not only does he want max dollars, but he also wants minimum term, how can anybody think this guy is a leader? Leaders take less OR leaders win and THEN get paid, Matthews has skipped both, he doesn't take less, not only does he take max, but he takes the minimum term too (new greed level unlocked) and he had zero runs to speak of even
4.Past comparisons don't work:
Matthews has 26 goals in 68 playoff games, Ovechkin at this point was coming off of his worst playoffs (1g/1a in 7gp), he still had 31 goals in 59 playoff games and he was playing with lesser talent, during his career Ovechkin played with 2 borderline HOF guys (Carlson, Backstrom), Matthews played with 2 guys that are basically locks (Marner/Tavares) and one guy who is nearing borderline status himself (Nylander)
Yzerman before he won a cup had 39 goals in 93 playoff games (a higher gpg) AND he only won because the team basically added the best defenseman ever and Shanahan, Toronto is not adding Makar and Tkachuk
5.Maybe the most concerning is that he literally has 0 big playoff games, he's not putting up volume 3 point games (4/68), he has zero hat tricks (he averages one every 48gp in the season), he doesn't have a 2/2 game, he has zero 4 point games, he choked when he was in Switzerland, he failed during the 4NF when he could've been the hero, maybe he's just not him? He's not a dawg like that.
Isn't it possible that a very talented athlete from Arizona just isn't dying to win a cup like that? It sure would make the greed, lack of fight, playoff failures make a lot more sense. All the evidence is against him AND Craig Berube won with way less in St Louis (Tarasenko/O Rielly who were both great but not even close to Matthews overall).
At this point there is nothing wrong with a exploring a trade; he had nearly a decade, he has never won anything, not at WJ, not at 4NF and not in the NHL, he has only choked, his team has always had a ton of talent and they've never done anything with it, he is greedy, he's not leader material, he's not like other past "chokers," he didn't grow up in a place where winning a cup matters that much, he has o big playoff games/moments and above all, somebody might overpay for him and he could be open to a trade himself.