Very important theory question, let say we are bluffcatching at GTO frequency with our range, then our opponent starts overbluffing, but we don't adjust and continue defending that fixed frequency (since he is using the same bet size), does our opponent lose EV since he is playing suboptimally, if so where is he losing EV from?

So imagine a one street river toy game where one has a polarised range and other has bluffcatchers, the player with bluffcatchers decide to play GTO calling frequency regardless and never adjust to any deviation by the bettor.

The bettor starts overbluffing by adding in way too many bluffs, but his bluffs all remain at 0EV at that sizing (assuming no card removal), because caller is still calling same % v that sizing. So how does this suboptimal play lose EV v a GTO calling range. The bluffcatchers supposedly now gain EV, but we also see less showdowns in the whole river spot and lose the pot more often than we should.