Aren't college rankings mostly using the bullshit "citation" metric, for which researchers optimize by forming citation rings? [1] [1] not to mention self-cita

Aren't college rankings mostly using the bullshit "citation" metric, for which researchers optimize by forming citation rings? [1] [1] not to mention self-citations, which is probably half of all citations in the US vs roughly 1/4th of them in most other places: https://www.scimagojr.com/countryrank.php?order=au&ord=desc* https://www.scimagojr.com/countryrank.php?order=au&ord=desc*