when I see that whichever instance I choose is defederated from another bunch of random instances, is it possible to have those show in my feed without making a separate profile from other instances? and can I turn them off again if I see that defederating was the right idea?
I’m probably “technical enough” to do that, but I’ve heard that from that point on I’m managing my own infosec- is that the case?
Yes, but It’s pretty hands off since 99% of security stuff is managed for you by the Lemmy software, including rate limiting. Just make sure you use a secure password and if you want put the instance behind cloudflare which is super easy to do.
Is it as easy as “create instance” or does it involve setting up a server and other cloud based software?