I've found that you get far better results for many queries on YouTube now since it's tougher to mass spam YouTube with low quality content (compared to churning out a $5 article).

I tested your search term and had similar experience. I have, however, had positive experience with other categories, such as philosophy. Searching Wittgenstein with the top million sites removed, I found some gems: a play, a disney character that was a supercomputer named after Wittgenstein on a direct to video movie which I learned was later partly inspiration for Wall-E, Wittgenstein-oriented societies, awards, and general philosophy references I had never heard of.

I suppose it depends on the category.

Google Scholar "waders" [1]

[1] https://scholar.google.com/scholar?hl=en&as_sdt=0%2C29&q=wad...