"Should"? That's really only for you to determine. I get why you want to try them out one by one, like using Piefed and Lemmy in parallel. It gives you a chance to weigh pros and cons of different services, or different ways to interact with them.

Vutuv... again, it's your choice, but for me, LinkedIn turned me completely off professional networking. I'm going to wait that one out to be sure it isn't flooded with the same icky performance measuring jargon before I even consider joining. Also, Vutuv looks vibe coded, so another big nope for me.

I think you're being generous counting Matrix in the Fediverse, though. It may be decentralised, but unless there are some bridges I'm not aware of, it doesn't really communicate with any fediverse services?