This was released on twitter as part of the 45th anniversary of Gundam as a franchise and to mark the 2-year anniversary of the original broadcast date of Witch From Mercury (October 2nd, 2022). Check out the Crunchyroll article for additional information. Synopsis of the first season from AniList:
A.S. (Ad Stella) 122
An era when a multitude of corporations have entered space and built a huge economic system. A lone girl from the remote planet Mercury transfers to the Asticassia School of Technology, run by the Beneritt Group which dominates the mobile suit industry.
Her name is Suletta Mercury. With a scarlet light burning in her pure heart, this girl walks step by step through a new world.
It’s not the whole fandom. But WfM (generally) highlighted the split between folks who were fans of the overall themes of Gundam (anti-war, character focused, fast and loose with sci-fi despite the real robot designation, etc) and people who just want “gritty” war anime (stupid space magic, why are there strong female characters in my cartoon, MUH WAR CRIMES, etc). It was a whole big thing on the old site and Twitter.