I would hardly call this an apology. Also kind-of bold of him to use this as a platform to implement new abusive rules. I don't like the subreddit, but selective enforcement and targeting a single community is very toxic to what little trust I had left in the reddit admins.
The problem is they aren't their own little community. They actively target, brigade (large group upvoting/downvoting), and intentionally troll other communities with their only goal being to fuck with people and overwhelmingly push their rhetoric.
Reddit strives to have a positive community and when you let the trolls run the system, you end up with an utter cesspool (e.g. https://voat.co/), and that kills your company's value.
Reddit (nor Twitter) is under no obligation to be a platform for free speech, and it's completely within their right to dictate who gets to participate and what they're allowed to discuss.