As long as the method you plan isn’t to create an automated system and then go a step further to give people ‘trusted’ status in reporting like Overwatch. Players should never have global input or control on who gets punished for any reason because it leads to authoritarian scumbags policing every perceived slight. See: Overwatch community, League of Legends tribunal.
It’s why if Host Kick and personal banlists exists like in the V1 mods the problems would sort themselves out. Even then, you’ll run into people who just make it their purpose in the day to ruin someone else’s.
As for the state of this thread, toxic players aren’t ‘on the rise’. It’s like every other game that’s experienced massive popularity. Vermintide 1 was a cult game. V2, for whatever reason, got actual marketing. Mixed with all of the psychological mechanics like the entire loot box system - I’m deliberately avoiding going into more detail for the sake of time - absolutely, we get a minority of people like this. We had good options, so fight for those options that we had.
But this is a warning that any global strike system, any overarching system, is a road to folly. Nobody should have the power to dictate what is “sportsmanlike” to others based on their temperamental prejudices.