How's that not a bug? I mean, it's reasonable for someone to want to restrict the superuser in a cloud environment, but if they restrict it so much that you can't take a backup with standard tools, I'd say they should also patch the tools, though maybe a better idea would be to restrict the superuser a bit less.
They 'should', and I completely agree; but that isn't the reality today.
Thus the patch.
Now it's understandable for the community to say 'not my problem' but
I'd say that depends on what it considers 'my problem'. If half the people
manage their installations on a cloud solution, it unwillingly becomes one.
Unrelated, it still does allow a non-superuser to take a dump sans the
password, which doesn't seem like a bad idea, since the patch
doesn't do anything more than dump from pg_roles, which is anyways
