Love the arguments on this one. Here's my 2 sats worth;

I'm pro no state. Therefore anti state enforced borders.

I want to be free to sail away and travel where I want. If I want that freedom then I can't deny it to someone else.

However, I wouldn't expect to be able to roll up at someone's island and demand they make me welcome, that'd be rude. Instead, the polite thing to do would be to ask if I might be welcome to share their resources, in return for whatever I can offer.

If I can see the sense in asking a community first if I might share their resources then I have to accept that others coming to my community should likewise also ask first.

For the sake of peace, good will and equanimity, I think it's worth not just assuming you'll be welcomed.