It’s difficult to blame Riyadh exclusively without taking into account Iran’s role in the Houthis’ takeover of Yemen [1]. Saudi Arabia regionalised and intensified the conflict, but they didn’t start it. (To your credit, I don’t think the Houthis would have long-range precision weapons were Riyadh out of the picture.)
[1] https://en.m.wikipedia.org/wiki/Houthi_takeover_in_Yemen