I'm not sure if it works that way, but if you change to Pay-Per-Conversion, it would be in Google's interest to make ad quality depend on conversions-per-view.

I'm not sure if it works that way, but if you change to Pay-Per-Conversion, it would be in Google's interest to make ad quality depend on conversions-per-view. And – as just another anecdote – I have had continuing success over the last 8 to 10 years with search ads, while not having a single conversion with anything else (Facebook, youtube, twitter etc.) as far as I can tell.