Deciding which problems should be solved, identifying where there is business value in solving them, is pretty much the definition of business leadership.
I think the only real answer is moving into management, where you can more effectively argue against spending effort on things that aren't worthwhile.
Well that’s not what I wanted to hear! I think you’re right though, you get to choose your challenge: do you want your problem to be possibly working on things that don’t really matter or be responsible (and empowered) to figure out what really matters.