Other social media are a case study in the opposite. When there is profit to be had, there will be people to have it and it's not always the most beneficial thing for the system.

My guess would be that the free market has its own way of finding the most common denominator more than anything else. It's not just about bots, look at all the lame steemit and crypto posts parroting the same sentiments that are the norm here, so far the market has deemed them as good. The problem with the market is that it's ruled by the original oranges :P

Of course, imperfect as it might be, I wouldn't say there is a more practical option than the market.