The hypothetical still applies, I think. Suppose minimizing K-complexity happened to be one's goal, then there are probably some steps that can be taken in its pursuit, and in any case it wouldn't be right to call it "foolish" if it's indeed the goal, even in the unlikely situation where nothing whatsoever can predictably advance it (maybe one should embark on a quest to find a Turing oracle or something). It might be foolish to think that it's a human (sub)goal though, where it would clash with what we actually seek.