I joined Steemit the very first day. I've used it a bit and checked back occassionally since. There are plenty of flaws with Steemit that goes beyond the obvious pumpNdump/pyramid/inflation/whatever you want to call it economic problems.
The problem with a platform like Steemit is it caters to the okayest and the most, not the best. What I mean by this is the way the voting/payment system works, everyone is looking for the most "good" content to upvote, because others will upvote it as well. Tits and walls of text are dominating trending day in and day out. You can read these posts, and many of them are riddled with errors and generally average quality. Why? Because everyone involved is there to make a profit (look at the dozens of monetization guides that get voted to the top). It's not about having something new, thought provoking, or different, it's about circlejerking anything and everything that the community can agree is worthy of votes.
The result is a feedback loop and a subsequent echochamber of the same recycled garbage over and over again under new names. Steemit claims to seek to provide a curated news source. That isn't going to happen because the only things getting votes will be in line with the community's opinions. FFS, look at how every other god damn post is an introduceyourself post. There is no value in this platform other than getting rich off of the efforts of others. It's a top heavy ecosystem and everyone disillusioned with the thought that they can make money are lining the pockets of the dev team and the top posters/botters.