You make a good point. The majority of the spammers are limited at least a bit by this change. Any ones that want to continue to spam have to hold Steem, which I suppose is a good thing.
I do think they should be a bit more limited than they are currently though. The question is how much.
If users are limited to only a few posts/comments per day until they get at least a few SP, would it really be so bad?
I don't think they have to be limited totally. If you think that if a dapp onboards them and discounts their usage on their platform, they can cut delegation. If a community onboards them they are welcoming in people they have somewhat vetted which reduces the risk of abuse. but if thy do abuse, cut delegation.
The RC delegation can work like the SP delegation earlier so that it erodes as the account earns their own. This means that it takes time to get to the zero point and then earn more to be able to really spam.
Well, the RC delegation does mean that it won't be such a big deal if we do limit the posts extremely...but we'd have to have communities that do those first.
There will also be people that come here knowing nothing...so we would have to watch for new users that show promise, if we limited people too much.
There will also likely be communities that don't necessarily know if the people that register there are going to be quality posters...
It will arrive. just think about now (before) they have to do drives for SP delegations for their users. Pass around the hat so to speak. Delegating SP loses voting power so is harder to give away than 'unused' bandwidth.
The community could welcome in with a better onboarding system meaning the users come in understanding the suggestions. A few front end tweaks would solve a lot of the Spam before it starts.
The community itself starts to police itself and doesn't need to use flags to do so.