yeah, there are two aspects to this: what do you think is beneficial for the ecosystem, and what do people do in practice. And those are largely different things, turns out.

I think you can make a pretty good case why it would be beneficial for ecosystem development to have protocols more standardised. But that also kinda doesnt matter much, because in an open network you dont have control over what other people are doing.

Bluesky has a much more structured protocol, and much more control over their protocol and anyone in the fediverse has over activitypub. Still, the first thing that people do is tweak the protocol. The three most successful other products on atproto (tangled, streamplace and roomy) all significantly modify the protocol to fit their own needs, theoretical arguments be damned