[jaster]

Probably because:

> Signups are currently closed, but you can get an account by sending a message (including your desired username) through the "contact administrator" button above. Please read the terms first.

(from https://peertube.social/about/instance)

[cronus97]

After following the documentation, It looks like joinpeertube.org is the peertube signup page. peertube.social appears to be a leftist oriented instance.