I think you're overstating your case. Successfully (persuasively, accurately, etc.) dissolving questions is a fantastic way to get tenure in philosophy. The problem is that it's a lot of work. (And justifying putting so much work into something is really hard to do when you're in a feedback loop with other philosophers' arguments more so than with independent empirical data.) Dissolving questions like this is not an afternoon's affair; in many cases it takes months, years, decades to complete this project, even when it's intuitively obvious from the get-go that some dissolution must be possible. (Remember, dissolving questions requires that one be able to understand and explain where others went wrong.)

It's also a mistake to think that rejecting the terms of debates is a novel or revolutionary notion somehow foreign to philosophy. Almost the opposite is the truth; in many cases philosophers have failed to make progress precisely because they've been too quick to flatly accept or flatly dismiss questions, rather than trying to take questions apart and see how they work without rushing to assert that they Must Be Meaningful or Must Be Meaningless ab intio. The history of the 20th century is in many ways a war between academics trying to dissolve one anothers' questions, and I think a lot of the recent mistakes we see in philosophy (e.g., the overreliance on Quine over Bayes, the insistence on treating philosophy and science as separate disciplines. . .) are in fact a byproduct of how crude, lazy, and simply unconvincing historical positivists' treatment of these issues was, often relying more on whether views sound Sciencey than on whether they're well-defined or true.