I've noticed that I have started doing that recently - appending reddit to my queries.

There just seems to be a load of imitation sites now, like 6 different wrapper sites for GitHub, 8 for StackOverflow, a couple for GitLab, something aggregating a load of forums - so the first couple of pages are the exact same content - just from 15 different sites that copy the originals.

At least going with a community site there tends to be actual discussion and or useful links to the relevant content

It blocks copycats and hide them from multiple search engines. You may also use the list with uBlacklist.