Ask HN: Declining quality of Google search results

Recently, I have noticed spammy / mined content sites are appearing in search results more often on Google (for any topic). Some examples are searching for programming questions / answers - usually SO is ranked near the top, lately sites have been mirroring SO content and are getting mixed in near the top. Next time I see the URL I will write it down. This has also happened to me while searching for open source packages; I found some spammy looking sites farming Github repo metadata / npm index metadata and those were near top results.

Has anyone else had an issue with this?