What makes the Houthis "pure evil" compared to all the other garbage people? Also, I hope you realize that's the exact same rhetoric constantly used by conservatives to justify unjust actions (see Reagan calling Soviet Union evil, or Dubya's "Axis of Evil" and the many others whilst they perpetrated evils as great or greater) and that's never actually worked out in a way that hasn't made the situation even worse (Reagan did eventually see that and it was maybe the only positive he did - but even that was too late as he basically pushed America into the forever wars mentality and ever ballooning defense industry based on fear).
I don't like the Houthis, but acting like they're somehow particularly evil compared to the other evils, including the ones perpetrated by the US (using literally the exact same fucking arguments the Houthis, or Islamic State, there's conservatives in America openly working towards the exact same type of shit and they also are responsible for more death and misery than those groups due to the much higher power they wield), is so silly that its like you don't even realize what a clown you look like.
Sometimes there's every bit as much evil being perpetrated by the persons doing the "just" work in dealing with "evil". That's also literally the exact same argument police have used for their perpetual campaigns of terror which often turn out to be based on bullshit, so your "evil" rhetoric just sounds like the full of shit preaching from the same type of psychopaths that want you to enable their strain of holy war. Which is the exact same type of shit the people you're declaring evil and need to be exterminated are telling their people. Its the exact same shit, just with slightly different names. Fuck your Crusades. They don't accomplish anything.
Hell, I'd guess the Houthis might not even make the top 5 of groups perpetrating evil in the Middle East right now. And that's just of the groups committing the exact same shit you are calling the Houthis evil for, and doesn't include Israel, the US, Turkey, Russia, or the others that have been meddling in the Middle East during this time.
Like I said before, this presents a good case for our military to learn some new tactics. Like how to cost effectively deal with such situations. Or maybe as a country, find some new fucking ways of moving goods. Or a litany of other options that would both cost less and not just continue the cycle of pointless fighting, that then is used to justify further fighting in the future. At some point you need to learn to break the cycle or you're just going to doom yourself.