A major reason the playerbase is toxic, is because PvP is a long-neglected game mode.
As the game mode becomes increasingly more apparent as a low-meaning way to play the game, people simply will not care as much.
If the rewards are better, development is more consistent, communication is more transparent and the future felt hopeful, the natural consequence is an improved base pool of players.
Past this you simply can’t control everyone. Players everywhere across all games are toxic in different ways.
But as the game declines, it gets worse.