This. I have been running it the same way for some time now. Even if you change something on one machine and something else on another nextcloud will just happily inform you of the conflict and then you can open both databases and cherry pick. Never had corruption issues.
First of all I agree wholeheartedly that the racist hooligans that instigated violence before the game and the slogans they chanted are absolutely despicable.
However the attacks against the Fans were not even indiscriminately against all fans (not just the hoolingans) but they were explicitly against Jewish people. Multiple reports from the situation after the game state how people were explicitly attacked for being Jewish. I don’t know how else to frame this than as an antisemitic attack.