

Sure, go ahead. Technically it’s not 100% correct. I mean lemm.ee wouldn’t be your provider, it’d be the people operating the server who provide the service to you… But I think it’s close enough. Only issue I can see is the term “provider” usually being used with commercial services. Like a cellphone provider or ISP. So I’m not sure if people start to think this costs $10 a month or something and is run by for-profit businesses… But we also use the word “provider” for free things, so I’m not entirely sure about that. But generally speaking I think we use different terminology because we don’t think of the Fediverse as a product.
I think it’s a waste of time. It doesn’t really add anything. If you don’t want to lose your subscription in the unlikely event that your server/instance goes down forever, just use the export feature to make occasional backups. You can always create a new account after something happened. No need to invest that time otherwise.
You’re free to use sockpuppets though. Or if you’re moderating stuff or participate in instances/communities who don’t federate.