I didn't played the game or read the books but I think if you are playing a game that is called Witcher and the Witcher himself is missing that is a big issue.
Normally you would get a new game with a new title but big companies want to use the IP and think using a known title is always better than coming up with a new title.
As I said I didn't played Witcher 3 so dunno if it makes sense, but I wouldn't be surprised if people are unhappy when their main character is missing in the game.
It is not correct. There is a movement in Germany that is called Anti-Deutscher (anti German) they refuse to call themselves Germans and refuse identify themselves as such. As you all can think there are many people that doesn't like them (main reason being, that they are toxic but that is besides the point) I'd also call myself anti-anti-Deutscher, only that doesn't make me German. You can extend this example, just because you do tolerate something doesn't make you part of it.
That said it is not a secret that Maga is a fascist group. I say it based on their own slogans. I don't know if they are even deny it.