Yes, it gets problematic as soon as extreme positions and mentalities enter the equation. All extrem positions are toxic, extreme left, extreme right, extreme religious (any religion), extreme fans of a sports club, extreme anything doesn’t matter.
If we could find some kind of balance, some true middle ground without huge extremes, then the world would be a much nicer place.
My comment was more in general for all of society, not only political parties.
But yes, for political parties that would be great!