Too many smart, savvy people who despise Musk stay on the platform for it to be believable that stupidity is the reason.

Non sequitur. Your reasoning is that something must be valid because otherwise stupid things cannot possibly be stupid if reasoned by supposedly smart people. That doesn't make sense.

https://en.wikipedia.org/wiki/Formal_fallacy

That is not my reasoning. You believe people who despise Musk stay on Twitter because they are too stupid to know of alternatives. You assert this to be true. I believe the reason is something different. We have two opposing beliefs. Neither of us has proof. I believe objective observers will conclude that my reasoning is more likely to be correct. Your belief that it is stupidity that causes people to not go to an alternative platform is not credible is my opinion.