[lrem]

Many (most?) do, that's where Google Scholar took its PDFs from pre-scihub.

[lorenzhs]

Google Scholar still gets its PDFs from preprint servers and author's websites. I suppose you meant to say that Google Scholar's web indexing is how many people got their PDFs pre-scihub?

[lrem]

Yes, you managed to unmangle my pre-coffee reply attempt correctly :)