I thought this was slightly funny.
Mark Zuckerberg is known these days for wearing t-shirts with Latin phrases on them, especially ones where he compares himself to Julius Caesar.
Bluesky made a shirt in the same style, but theirs says “a world without Caesars” in Latin.
Well, its easy to build an app on atproto, but lord forbid you want to do anything with a pds. The activitypub spec is so much easier to read and understand than the pds spec.
Also, portable identity is possible on activitypub as well, its just not implemented in many projects.