always remember that a solution is only as good as vendor acceptance.

for there to be one true future dialect of AP, it must be accepted by implementations.

I find it unlikely that whatever cwebber proposes to do will be accepted, because it will probably bring us deeper into LDP instead of moving us away.
also before lamenting cwebber with praise, remember that he is directly responsible for security being non-normative in ActivityPub.

I'm not trying to rip on him, he is very smart, but intelligence doesn't translate to good, safe and secure specifications on it's own. the W3C linked data platform vision is dangerous in and of itself from a security POV.

I am very skeptical that he can unify both sides of the split, the ones who care about safety and the ones who like the convience of JSON-LD and LDP technologies in general
@kaniini keep in mind that the time available to working groups is limited, and if you have such a controversial topic with opinions that really don't align, it's hard to find agreement on something to write into a spec within that limited timeframe the working group has available.