A few things to be said:
1) Trouba is not above being criticized for his play, and his tendency to commit plays of questionable legality from a player safety standpoint.
2) While the line can get blurry, he can still be an advocate for mental and neurological health off the ice even with a history of questionable on-ice play. The idea that only people who have no history of any conduct in an inherently physical sport where things are not only allowed, but encouraged, is a fallacy to me.
3) Criticism of performance is OK, but critics should remember that these are real people involved and should be mindful of criticism that crosses a line or becomes deeply personal, such as implying that work they do for mental and neurological health is some kind of sham.
4) Constant media criticism that crosses a line, combined with the pressures of being a pro athlete can and does lead to depression in certain instances. Having money does not absolve you of these things.