Your arbitrary imaginary numbers are irrelevant. Again...I would argue that there is no such thing as "toxic" players. Especially in a PvP MMO (or game since you mentioned CSGO). Player friction is what made ALL the original MMO's great. What you call "toxic" behavior is what original developers created MMO's around. Player friction is what made MMO's great.
1. Player fiction gives players purpose and drive. It makes players want to return to level and beat the snot out that player that camped them for 30 minutes before help arrived, or killed the quest NPC they needed, or even their faction leader.
2. Player friction creates communities. It bands people together against a common enemy. It creates friends and groups of friends with purpose and drive.
3. Player friction forces grouping in a GROUP focused genre. Want to be safe? Group up. Want to go solo? Be ready to call on friends and guild mates for help.
4. Player friction helps far more with player retention than it hurts. Most people are competitive to some degree, and will return to compete with players they don't like, agree with., or oppose through faction.
5. What you refer to as "toxic" behavior in chat we used to call "Trolls". Trolls are fun. Trolls drive community and create relationships. A stale chat with no fun is a dead chat with no real interaction. People need people to dislike, to argue with, to drive them to greater things,
Today's MMO's are stale and pale in comparison to the communities we formed when player friction "toxic" behavior was king. Bring back interesting chat. Bring back corpse camping, bring back killable NPC's...BRING BACK A REAL COMMUNITY that bands together towards common goals that aren't "in the game".
All the things you listed are usually correct. But are they also a contradiction and do you think they justify the toxic players? Toxic players do not belong in a game, and you have to set limits for these players. A good MMO only works with mutual respect for all types of players. Or do you think it's funny when 5 high-end players farm and kill a newcomer for about 30 minutes just because he's new to the game? I have been playing MMOs for over 10 years and various other games, trolls, gankers and toxic players are, were and will always be a problem. You can't deny that in 2023. Or in a group, Dungeon for example. The group is not fast enough and a player leaves, so ratings are absolutely justified. There are hundreds of examples.