I have no idea if that's FOSDEM infra, element.im or my home server (which is a fairly standard synapse install provided by a local tech group, so it shouldn't be out of the ordinary) to blame, but starting Saturday by joining a bunch of the relevant channels and getting told multiple times "Too many Requests!" and having to spread out joining 10-12 channels over 20 minutes wasn't fun and surprising, especially since the rooms weren't even set to provide backlog!

I generally use Matrix quite a bit, but I didn't find FOSDEM a convincing example. I guess some people like having everything squeezed into one tab, but it didn't work well for me, other than that it didn't have much of a value proposition over any other chat system for me personally, and as initially described even the experience as a chat system wasn't great.