The Main points of the arguing stems from gio's very long posts that you can read here:

This one is the MAIN one with most of the accusations against Andrew Hussie.

https://blog.giovanh.com/blog/2025/08/08/uhc-end/?campaign=r

And this one is a second post he made the same day:

https://blog.giovanh.com/blog/2025/08/08/the-homestuck-union-was-always-fake/?campaign=sb_related

This is Mile's unofficial response that is just him stating his own perspective on things:

https://www.fruityrumpus.com/forums/t/the-uhc-situation

And if you're curious about like the "past" drama that people are referencing there's also sources for that. Most people watched Sarah Z's youtube video on it. I myself have no idea about this drama and I still am confused about what happened T_T But I've seen people link this video as an explanation so:

https://www.youtube.com/watch?v=gsM9bQvpt_c