I agree with some of what you're saying.
Standard flop play is to just fold. We only raise if we have a good image and think that villain is capable of folding something some time.
I don't see how the K is the best card for us to barrel bluff on. Our FE is highest on a low blank. When the K pairs, our range contains fewer Kx hands, and more PPs. --> AJ/AQ will peel more frequently (maybe always). Now if we barrel turn, we have to barrel river. If we deem a triple barrel to be unprofitable, it is absolutely better to give up. Even bad players will know the K diminishes our range and will call down lighter.
I'm guessing that was DD's initial read
I also really hate 3x barrel bluffing. IME, people who call the turn on a dry board VERY often call river. So, we try bluffing but give up because of the bad turn that kills our immediate FE. I think it's defensible and not as horrible as you are saying. Certainly not FPS.
(With a J/Q/A on the turn, at least we have immediate FE against smaller PPs; the J/Q also give us a GS
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