Yeah the Steemit System prevents most of the spam by design. Thats very nice. But there are still a lot of generic "good post bro, follow my stuff here"-posts. I hope they will be gone soon. These people still getting upvotes, not very powerful ones but maybe enough. Especially if they use a bot or script to comment on everything.
But I think it will be a matter of time.

Now please upvote and resteem everything I posted in the last 10 years. Thanks! ;-)