> That kinda makes the entire feature quite useless/uninteresting to me: if a this does is desugaring into a set of assignments, then I'm not sure what its advantage is.
I'm sorry about that, but the motivation of the RFC is quite clear in
the "Motivation" section.
If those goals are not interesting to you then COPA won't help you.
> I was kinda hoping for an atomic state mutation across multiple fields, heh...
Sounds like another RFC (that may make it in PHP 9.x+ ;-D)