"Block posting and voting privileges..." If a user cannot post, comment, and vote, they essentially don't have any existence on Steemit. What's the point of making ghosts?
Absent the ability to get paid to post and curate, new accounts (like me) would be unable to generate any rewards, and thus have no way to later fund their account. Delegation of SP has worked, but is prohibitively expensive, and dependent on folks giving up the rewards they can generate with their SP.
While sponsorship of some kind is necessary to fund new accounts (and new accounts are valued across industry at a minimum of $300), in order for growth to be less unwieldy, there needs to be a better method.