I know about the war but it doesn’t mean the Saudis would automatically lose against the Houthis again
Let's just say your faith in 'regime change' and Arab armies exceeds mine by a great deal. The world turned a blind eye (because Obama had our Pentagon quietly aiding them) while they killed hundreds of thousands of Yemenis and it still didn't win them the war last time. The Houthis still refused to quit. And once they realized the U.S. couldn't defend their refineries against the Houthis drones they immediately sought to de-escalate.
So what's changed?
I'd put my money on the Saudis making a deal so they can get back to making money. They don't want to see their golden goose continuing to get cooked.