It's like the bad-old-days of ExpertsExchange, which somehow was never delisted by Google for its shady SEO tactics.
As a user, your best personal and ethical move is to install an ad-blocker, to make ad-based business models less viable, which will help promote business models that don't abuse the customer.
This seems a bit overly cynical. Some search engines only served ads, but they're long gone. The survivors are those who dedicated themselves to finding links which were responsive to people's search intent. They seem to have gotten into ads because it was the best business model in this market.
Some even made slideshows of SO screen captures and put that on Youtube, with a fake video or spoken intro to make believe an actual content will be discussed... A number of shameless people would go any length to grab bits of money anywhere and anyhow, and I've hit those links a couple of times.
This is really what made me suspect that Google was teetering on the edge of the MBA death spiral: these problems run for years when they'd be easy to block, which suggests to me that whatever metric gets you a bonus / promoted doesn't include things like that which are long-term threats to their core business even if it's selling a lot of ads short-term.