I personally haven't heard of this, but if it's true it's probably just because he's latched on to them like I was saying. He didn't buy Twitter with some nefarious conservative intent to unblock far right accounts, he bought it because he's an idiot who got into a pissing match on social media. He even tried to get out of the sale claiming "bots" and the owners threatened to sue the shit out of him.
Edit: Lol people downvoting because I haven't heard of this? Never said it's not true, I just haven't heard of it.