OSINT accounts provide detailed information on a number of global conflicts, not just the ones that get covered in the media. And the level of detail and analysis is almost always better than what you get in the mainstream media.
It wasn’t clear that parent was referring specifically to military OSINT and I took it more as general OSINT which is often of civilians, and can be less ethical and lead to false conclusions.
It's not about militaries since military planes mostly have their ADS-B transponder off. But OSINT community depend heavily on flight trackers and also on sharing location information with wide audience.
It's possible without Twitter, but bans for sharing of location information will make it much easier for Russia to block investigator accounts.