The 90s and earlier, yeah. But cable in the first 15 years of the 2000s is where TV peaked quality-wise. Streaming captured the max output, but peak TV quality was largely before streaming went from re-runs to new-production. The 2015-2022 era honestly watered the quality down quite a bit.

IMDB Top shows ratings https://www.imdb.com/chart/toptv/ - the bulk of the top for scripted series are cable shows (especially HBO)

RottenTomatoes fan picks https://editorial.rottentomatoes.com/guide/rt25-fans-top-tv-... - very similar list