I've been one of the earliest followers of Hive account@haejin and while his formatting and style can definitely be improved I did enjoy some of his chart readings.

He has been consistently posting at this speed for a long time, even when he was making mere cents per post. I can see some increased posting from him due to enthusiasm (who wouldn't when suddenly you do start earning a lot) but overall I wouldn't say his posting behaviour has changed all that much.

I kind of think that there was a tipping point where he started to gain some more wealthy followers that started to auto-upvote. Once you breach $10 consistently.. well, you know everybody else is going to pile up in order to get curation earnings. It's the same reason why posting today's price of Steem and SBD every day can earn some people a lot of money.

I personally don't think Hive account@haejin is abusing the system, but rather got lucky through organic growth and the way Steem(it) is set up.

I can't say I agree with the hundreds of dollars a day earnings either to be honest, but I don't know if Hive account@haejin is to blame for this or his followers (or indeed STEEM/Steemit).

I do think posting 10x a day could easily be combined and compiled into 2-3 posts a day with more substance, though. Because indeed, when the amounts get so high that it becomes 6% of the reward pool... from an ethical and long term Steem outlook that doesn't seem like a good thing.

Anyway, just giving my opinion as a more-or-less-outsider looking in. I would sooner blame the system in this case rather than Hive account@haejin specifically. I feel actively downvoting/flagging his posts may not be an ethically sound solution in this case either. But, who am I to talk? This is the Steem wild west...