I'm not referring to the Github stuff actually, but the GPU benchmarks and information that's been datamined. Some of those just happen to line up with the bigger Github leak that came beforehand. Also GPU data has been found with high accuracy to actual upcoming products, so that's something to take into consideration.
IIRC it was insiders claiming XSX dev kits were further behind, but that detail started changing once the XSX APU shot was put out in early January (right before CES even). And while MS's usually made announcements related to XSX right before Sony does something, it's usually been to an opposite of whatever comes from Sony. The APU die shot to the CES logo, the "non-rendered" XSX unit (maybe devkit?) shot ahead of what Sony announced either that same day or a day afterwards (think it was the "skipping E3" news, not sure), etc.
Then the Twitter post a week and a day to this AMD meeting coming up. FWIW that 4Chan spec leak (which seems to have kicked up the recent conversations the past few days and now Osiris adding to that pot) hinged itself on a March 3 reveal date. That's literally tomorrow. So if nothing's revealed then what?
Also Sony had an email set up for people to receive news on announcements...if a PS5 reveal is coming tomorrow shouldn't people be getting email alerts by now? If the reveal's happening "today" (since it's either March 3 there already or close to it) then people should be getting email notifications within a few hours no? It is a supposed PS5 reveal, what better time to send out alerts for the people who registered for them?