Sorry, that's a cheap moralism mate.
Do you know that Mpabe, Ronaldo, Pogba, Neymar, etc (and you can put literally everyone here)... are NOT racist, xenophobic, trans-phobic, or anything else morally objectionable? No
Do you know how they behave in their personal lives from a moral point of view? No
CAN you know that? No
and most importantly,
DO you need to know that to pass judgment on a player? Not at all
Dembele can be racist, and a a shit human being. I don't need to know that, and he is not anyone I relate to to care about his character.
Other than that, it's another occasion for his haters here to shit on him, and use whenever fit to evade judging on the pitch only