It's been like half a decade (fuck, old) since I was in college but I never felt it had a particularly negative slant. Most good professors had very good ratings, the one actually-bad professor I took had a pretty bad rating (but she was the only one available for that class).

I always used it when signing up for classes, so even if it doesn't influence individual educators, it'll tell you who to avoid. Especially for valid critiques like "fills her lessons with AI slop".