Yep, 100% agree. Mayer has been an infuriating player for me to watch this year as it is clear how much talent he has, and yet it's even more abundantly clear how little a damn he gives with his effort on defense or willingness to play within the system on offense for large portions of games. Mayer is a player who if he showed the defensive effort he did in the 2nd half and the selflessness on offense for the first 10-15 minutes of that half he would be truly exceptional. But, he just doesn't. Well, unless it's effort that'll directly show up in the box score. I know players who play like that all too well. They might've had the most talent on the court/field and yet nobody liked playing with them and those teams they were on certainly didn't win all that many games.
When Matt decides he wants to give a full game's worth of effort he'll get a full game's worth of minutes, but until then, I have no problem cutting into his minutes to players who will give that effort the entire time they're in the game. And yes, I'm still saying this after Matt had his best game as a teammate as the only reason he can't do that for a full game is the thing between his ears that's holding him back.