Elon has been very clear about this: he follows the laws of each country. That is, if the government wants to restrict free speech, they must pass laws (or the equivalent in court) to do so and Twitter will follow their laws.
If their government wants to act in contrast to its own laws, then Elon will fight them.
He’s not trying to uphold some universal free speech liberty.
This doesn't track with how he arbitrarily bans people he doesn't like on Twitter. ElonJet, journalist, and people who campaign for Harris all come to mind. Nothing they did was against the law.
He himself is not a government so he does not hold himself accountable to the same free speech laws.
But he holds governments to their own laws. That is, he will comply with government censorship requests if they are within the bounds of their own laws.
I'm not arguing about that (I don't buy that either).
I'm saying that there was no change in laws or even in Supreme Court ruling since the block.
Elon Musk though it was unfair the decisions to block the accounts, and now he thinks it's fair. The only person who changed the opinion or ruling here is X.
A rouge billionaire with a popular social media platform might just be what is needed to get governments to properly regulate these sites that are the modern equivalent old school media companies, but are held to much lower standards.
If their government wants to act in contrast to its own laws, then Elon will fight them.
He’s not trying to uphold some universal free speech liberty.