Google can both be worse because of the web results declining in quality and terrible product decisions. It is of course much easier to see one of the two, and make an alternative search interface possibly using different rating criteria. It just can’t solve the entire issue, because spam is also absolutely cheap to mass produce now.

Yes I agree. I don't begrudge competitors trying to do better at search at all. Maybe they'll succeed. I've just always been skeptical that they will be able to make significant progress on this problem, because I think the problem is ultimately garbage in garbage out.