Substack must be thrilled with Twitter's decision to block their links (which will be reverted I'm sure), great publicity for Notes.
Matt did a great job with the Twitter files, he has integrity and he's "incorruptible" whereas Elon is a petty tyrant who goes nuclear for the slightest disagreements, so I honestly wouldn't be surprised if this will end up with Matt's account removed.
He really doesn't. He's been a hack the entire time. I hated his writing when he was a liberal darling as well; he whips up readers emotions with sensation but holds back contextual information that would allow them to easily get up to speed on the issue in question. It's a commercially popular form of journalism, but not a good one.