This ban might be uncalled for as it seems that Rockstar’s anti-cheat system might have detected behavior that might be considered cheating when in reality there wasn’t. A post on Reddit reads, “Rockstar’s anticheat seems to have truly failed, as, according to a post in the GTA online discord, a user using their own anticheat detected everyone else in their session was a modder.”
Naturally when players get banned most of the time they will protest it, but in this case as Polygon points out, the number of players getting banned would seem to suggest that maybe something could be wrong with the system that is causing a high number of players to be banned wrongly.
The “good news” is that the ban only seems to last for 30 days and isn’t permanent, which means that players will eventually be able to play again. Whether or not they want to is a different story. Presumably many have since appealed to Rockstar to look into the issue but so far the developer has yet to comment on it.