UASF activation would prove in practice that full nodes have power over rogue miners
once again, and thus the latter can no longer hamper or otherwise hinder Bitcoin development as they have been successfully doing for the last few years. The BIP148 proposal means activation of SegWit without miners' prior consent (or even despite their resistance)
Basically, miners are told to pack their things and go home if they disagree (provided this proposal gets accepted, of course)
Nothing you're saying makes any sense because if you believe there are "rogue miners" or a mining cartel who centrally controls the network, there's obviously no Nash equilibrium and bitcoin has no value in the first place. One does not simply remove power from the miners without also proclaiming bitcoin a failure at the same time. You're also claiming a centralized development team should have full control over the chain as well and that the economic incentives that are supposed to make bitcoin work don't work.