There’s no doubt Iran is helping the North Yemenis develop weapons. If I were a Yemeni I wouldn’t say no to it neither. They probably have provided blueprints and got most of them manufactured in Yemen.
However, Saudi Arabia is the in the wrong here. They escalated the Yemen conflict from the beginning and refused to negotiate. At this point I highly doubt the northern Yemenis aka “houthis” will listen to Iran even if it asked them to stop targeting Saudi Arabia. They have been under attack, blockaded/ starved for the past 5 years. What else do you expect them to do? They will only stop when the blockade is removed and the Saudi aggression is stopped.
Either way. I think the gulf is too fragile. Qatar, UAE, Bahrain will all be a target. Any country which will allow US forces to strike from its land will be a target. So far Kuwait and Oman have been keeping low profile and I highly doubt they’d want to involve themselves in the conflict. Iran doesn’t have much to loose compared with the Arab gulf countries. They’re oil exports are very low, their economy is devastated.
I have a few relatives which went to Iran lately and things have been bad. Theft, kidnappings, drugs, prostitution are becoming more widespread.
It’s probably not a good idea to fight someone who has little to loose. If Iran were to go down, they’ll take the entire region down with them, and they can.
Imagine what a few missiles or drones at Dubai airport or jebel Ali port would do. It’ll have most of the foreign residents flee and basically the entire economy will collapse within days.
Bluffing is one thing, reality is another thing. The best thing to do is find a way out and not find a reason for war.