Yeah, it's no coincidence that a majority of cars with flags also carry a sticker with a big ugly 22 on it
The main - or only - reason why I kind of hope Brazil does well at this World Cup: it might be the only chance in the foreseeable future to have the flags and stuff be linked back to football a bit more...not saying it will unlink it from Bolsonaro, but a Brazilian World Cup title might at least make the flags be a bit more about football again (even if it's not comparable to 'before').
I know, naive, but one can hope.
The whole thing also kind of sucks (albeit not more than an annoyance of course) if you're a Brazilian athlete who wants to train in their national clothes, without showing political preference.