I like your analysis and it's very well reasoned. Clearly we don't know the full story so you may well be on the mark. But I have two criticisms.
1. When we did try to attend a meeting without KSA being present but with others present who were willing to discuss the Kashmir issue, KSA threw its toys out of its pram and suddenly remembered it was in charge of Muslims and could tell us not to go to that meeting.
2. Assuming KSA is in some economic strife, they should simply ask for help and make it clear. In that situation, Khan and his advisers wouldn't embarrass the Saudis with open criticisms like this.
For the above reasons, I feel it is more likely that KSA is not in any significant crisis whatsoever and is simply exerting negative influence on Pakistan and Pakistani interests.
1. They want the influence and were confident of their influence, there is no doubt about that, and that is why they're feeling the heat now. Given the tough circumstances as of now, the next time they won't throw in such a tantrum, that's my analysis.
2. Silence obviously means one thing, that the option is still being considered and is on the tables. It hasn't been abandoned yet, otherwise, a straight rejection would've been given. But they don't want to do that to Pakistan. Most of the finance-based news outlets stated that Saudi Arabia, with Aramco as its backbone, has high optimism for the third and fourth quarters of the year and hopes to bounce back from the severe crisis as countries liftback their lockdowns and import oil as per demand. One of their ministers said that they're hoping, and waiting, for positive indicators soon. So, they might just be waiting. I think it's the fault of SMQ that he made those statements, he is responsible for what he said.
3. Saudi Arabia is in a crisis, and you know it when their oil export profits plunge over 50%, they're being force to borrow and eat up reserves, and the IMF, World Bank, among other organizations are predicting a contraction of their economy by over -5% which is the sharpest since 4 or 5 decades.
4. Let us just assume, against all odds and evidence, that Saudi Arabia for some insane reason doesn't want to think about its economy during an economic crisis but rather is more concerned with annoying Pakistan, a country it considers a friend. Even then, these statements by SMQ, with such rebuke, are resentful because you have more to lose than to gain from these.