>>13601337>2020 /hlg/ was cool with nijisanji.Not really, the vast majority of people in those threads got into vtubers from Hololive and were already coming from the worst boards possible before HoloEN necessitated a split into global. Newfags were already falling victim to the bullshit of resident spergs who had been there for years prior (always pitting Niji vs whatever, coincidentally) as early as Nov 2019 and there was no difference between the /hlg/ and global crowd until much later.
The actual tribalfagging (on 4chan at least) that emerged was mostly from people just not fitting in with /jp/ type posters/culture at all and it morphed into Niji(/jp/) vs Holo(mostly new posters).