Also take a look at what goes on in India. If I remember correctly it took under 5 days before the whole "its going to be a free speech platform" came crashing down. I honestly like Musk overall as I believe he started companies to better humanity but to claim Musk allows organizations or people free reign on twitter is crazy at this point.
You're putting this as a known fact, but it fully relies on Elon being truthful. The Substack CEO denied this, and since he doesn't have a history of lies over the last months, I don't see any reason to give Elon the benefit of the doubt.
That's why you were not allowed to like or retweet posts that linked to substack, right?