Going off of current_horror's comment on "purity testing", purity spiraling depends on what principles should be adhered to by the group. When I see clashing in the forum, it's disagreement on which of those are fundamental, but also on what specific problems should be tackled first and how to handle them.

The fallout of Gamergate caused people of various beliefs and opinions to be thrown into "the pit". Most just wanted to play videogames and watch anime, but it was a good idea for people to branch away and discuss geopolitics along with the root causes of why media was being corrupted. The problem is now new iterations of KiA opened further to the point where you have groups of users that strongly disagree on certain principles, sometimes fundamental ones. Opening it up to discussion of almost anything is paramount for free speech, but that's why there's threads of atheists screeching about Bible thumping, routine intense arguements over the legality of lolicon, or the stupid DeSantis vs. Trump arguments. Although, it's pretty much guaranteed of any group to come together on some things and disagree on others.

Current tension is coming from the desperation for immediate resolution while we're losing time... but there's members hardlining on every single thing. If you keep making hard lines on even non-fundamental principles that not everyone in your current group can agree upon, you start losing people. You still need strength in numbers, unless willing to die for your beliefs after ousting everyone that disagreed with at least one of those matters more than living a full life. That's where the concern of purity spiraling originates from.