Most Odroid boards have arm processors, but the H3+ has an Intel N6005.

The communities on different instances are not the same. You can subscribe to both. The idea behind federation is that one company/server can’t control all the traffic. It might result in a little splintering of communities, but I think it’s ultimately better to be decentralized.

Faceit anticheat is very intrusive and requires disabling virtualization in bios. Also means no Linux support.