Lemmy.ml, the most popular instance fo Lemmy out there, is not accessible in my country unless I use a VPN. But, I can subscribe to any community that exists on lemmy.ml from here and even post on those communities from this account.
I love this aspect of Lemmy.
Yeah, I was careful to say fediverse rather than lemmy for that reason. I think a sufficiently motivated party could still make access very difficult to sustain. Whether anyone’s going to be that motivated remains to be seen.