I doubt the happenings on steemit.com have any real impact on the price.

Then why Ethereum has any value since it's given away to people wasting up energy and graphics cards for computing random stuff?

I tend to think that what makes Steem valuable and what represents a huge potential in its price, is this community that we have here...

Just to make my point clear, on facebook there are a lot of shitposters. Almost everybody. And still, facebook is worth billions. Good or bad, it only matters how many of users the platform has, and how engaged they are. Then they will attract people wanting to pay money for advertisement. Then some of them will buy Steem and promote shitty ads, and we all will be living happily in a shitty platform, but unlike facebook, in a decentralized one. Still shitty, but you are free to post anything you want, and without it being so intrusive.