I'm not saying he would be able to tweet however he wants, but perhaps a desire to do so, aka, to not have the SEC tell him how to communicate on a platform he bought for ~$43B. I just see it as a potential escalating standoff between the SEC and Musk.

Perhaps I'm looking too deep into this and he really does care a lot about other people having freedom to tweet whatever they want. I think there's just a good chance that the SEC ruling telling him he needs to have his Tesla tweets reviewed before sending them could also be motivating him to buy Twitter.