I'm the person who has to clean up the garbage out. Most people have no idea if it's garbage or not. In fact I'd argue that they have little ability to assess quality having never been exposed to it. That's the only reason this technology has any interest. Not because it's good but people aren't good enough to tell if it isn't.

On that note, I'm sure Sonnet 3.7 does indeed approach the asymptote of not good enough better than Sonnet 3.5.