Voting gives you the right to complain because you tried to accomplish something. Giving up without trying is generally viewed as a bad thing.
But talking about "beltway uniparty" is indicative of a level of lacking intellectual curiosity that's genuinely sad. You can do better than that.
Maybe if this was twitter or a dinner party and you're just going for cheap laughs, sure, whatever, but I dunno, I guess this place isn't much different? Maybe it could be though?
People sadly value feelings of (totally unearned) intellectual superiority and sense of identity over actual ability to make changes to the world. Thus the stupid subset of mostly young people who think not voting is making some sort of statement other than that they are fools.
Well the first amendment begs to differ, but beyond that I absolutely get to complain about the situation. I wouldn't complain about whoever wins because I already don't like either of them. But I may very well complain that the two parties offered candidates that I so strongly felt were bad options that I couldn't vote for either one.
I'm not saying I need to agree with everything a candidate says, or even most of it. I need to at least believe that we won't be worse off as a country with the candidate I vote for. I can't sat that for Trump, couldn't say that for Biden, and wouldnt say that for Harris if she is selected.