So many AP platforms are made by a couple of guys in their garage, it’s not even funny, and the mentality of “just dicking around” means what gets used is whatever the whims of the day dictate, rather than the standard.

“If it works, it’s not stupid” and all that.

But that kind of work lacks real world testing, and depe concern for public expectaton or desire.

Plus, you have to keep in mind that the idea of interplatform interoperability isn’t this core conceit of ActivityPub. It’s a potential use case, but it’s not an expectation. There’s no reason anyone should expect interop like that, other than some developers wanted to try it.

But some didn’t, and now that their platforms are gaining audience, they’re refactoring to meet that audience’s expectations.