This is false and a false equivalence. It's like saying that we shouldn't care about ukraine since they have azov actively fighting on the frontline, so both sides are just bad.
There's mostly one side that's doing the "bombing civilians" and "invade your weaker neighbor " part. And it's not like America is neutral here. They are actively supporting the saudi/anti houthi coalition, with intel and weaponry.
It's fine to say that you just don't really care because we can't care about everything, which is true, but there's no need to rationalize that choice.
Really?? I thought US is supplying most of the weapons and logistics for Saudi Arabia to fight in Yemen while Russia is supporting Iran which supports the Houthis. In the end, both sides are bombing the hell out of that country which has no recourse.
I looked into it, just in case I was wrong, and it's certainly not "most of the", but there is some American support for Saudi Arabia fighting Yemen, so I was partially wrong.
Edit: I appear to be wrong about this:
America would not support either side in those wars, so they just leave them alone to fight.