All the promises are well defined excepting the restriction for voting posts/comments, because as you said they can delegate and vote from another account.
BUT, the main reason of the softfork is to:

• Prevent power down or big transfers that could affect the price in the markets (not present in Tim's softfork 0.22.3).
• Prevent a monopoly in the election of witnesses.
• Prevent a monopoly in the election of proposals (not present in Tim's softfork 0.22.3).
• Ensure that they can do what they were doing: Faucet of new accounts, autonomy in the decision of supporting projects with delegations.

So, this list of promises is very well enforced. Votes for posts/comments could be a good thing to keep an eye but it's not very relevant.