Saudi Arabia has been supporting the government of Hadi, the former vice president who became president in Yemen's 2012 election. Meanwhile, Iran has been giving support to the Houthis. Again, the situation is complex, but it seems to me that without SA's military support, the coup would have been successful in seizing control of the country.
Imagine SA withdraws all military support, and the Houthis are successful in taking over the country by force. Is the world now a better place?
Maybe. Maybe not. I sincerely don't know. But if you felt intense anger while reading this article... I have to point out that you probably don't know, either.
The humanitarian needs in Yemen are immense, and heartbreaking; it's the poorest nation on the Arabian peninsula, and it's essentially run out of water. Maybe it's better to let the coup succeed just to allow some stability and rebuilding.
Just don't have any illusions on what you're actually supporting.
EDIT: And if you don't know what to think yet, or what's best for everyone... be willing to say that to yourself.