Salaam
This is the problem with people who are not well verse with politics nor military realities when they share their opinions. No one can overcome Saudi Arabia militarily in the mid-east.
Any war with Saudi Arabia will quickly become massive global war because it's the heart land of Islam. Around it sits 9 allies and Together population wise they are close to 500-mio strong. Saudi, Sudan, Egypt, UAE, Qatar, Kuwait, Oman, Bahrain and Jordan. They are heavily armed, have the manpower and willing to fight until the last man if the 2 holy mosques is put in denger.
It's gonna be a nightmare fighting them. multiple allied forces even if they attack could perish as a consequence.
And Subnallah even the Prophet(sa) Said that the enemies of Islam will not be able to pass a district south of Medina he said the Enemy won't be able to pass there which will be the limit to how far they can go in such an operation. They will never be able to pass that zone. The enemy fielded that day upto 1-mio from 80 nations and Even the Americans themselves said Saudi arabia is 5th strongest nation in the world currently. Just because they are very diplomatic and don't show off doesn't mean they are walk in the park and to be honest quite the opposite
I certainly don't think Iran is stronger than the GCC countries or the Saudi allies. However, Iran is capable of hurting the Saudis badly if it came to direct confrontation. The GCC would do a lot as well but has a lot to loose as well.
This is why we didn't see any direct action when the Saudi oil facilities were attacked. Everyone knew where the bombs came from, regardless of who fired them from where. The order and equipment came from Iran.
In Syria the GCC was going after Asad (an Iranian ally) but because of their enmity with Turkey the focus was lost. The fight along with it.
The GCC and the Arabs are not punching according to its weight, imho. I actually think there is a lot more potential there that is untapped and when looking at the Arabs and their resources, it obviously looks like wasted potential.
Maybe you think that the Arabs, with all the resources at their disposal, can only manage whatever it is that they have managed recently in Yemen and Syria (and in other regional conflicts) but I just see that as underperforming.
Why is the talk, despite that 500 million population and trillions in GDP, resisting invasion, when the Iranians are clearly going at you from multiple sides, and not taking the hurt to the enemy?
The Iranians bombed Saudi territory, why did Saudi not respond in like? A general was killed in Iraq by the US, but nothing was done by the Arabs themselves.
I know the matters a lot more complicated but the fact remains, the proof of the pudding is in the eating. What results were achieved in Syria - where the Iranians won. The way the Yemeni war turned out, was it the desired outcome?
Point is, yes I agree that there is a lot of potential there, however, there is much to be done before it is realised.