Theoretically 6 & 7 should be a big red flag (the biggest possible UX red flag) to Google regarding the specific Quora page visited - I know that I almost never see Quora results in search, for example.
Following Bartosz Goralewicz's post about how well botting works to manipulate Google in...2014 I think? there's a small black hat industry that's sprung up around imitating this kind of user reaction, and it does reportedly work to remove pages from Google. I've had my suspicions that it's been used against sites I've worked on a few times (2 or 3).
TL:DR; Quora should generally not be ranking so well (but Google's complex enough to be unpredictable on a page-by-page basis these days).
Following Bartosz Goralewicz's post about how well botting works to manipulate Google in...2014 I think? there's a small black hat industry that's sprung up around imitating this kind of user reaction, and it does reportedly work to remove pages from Google. I've had my suspicions that it's been used against sites I've worked on a few times (2 or 3).
TL:DR; Quora should generally not be ranking so well (but Google's complex enough to be unpredictable on a page-by-page basis these days).