I wonder if the S2 reappraisals are in part because some of TNG's "intellectual" content has aged pretty poorly - it doesn't seem too controversial these days to say it's often sophomoric "Picard versus this week's strawman" stuff - while the parts that are just pure high-concept sci-fi look better with age.
There's good stuff throughout TNG but S2 might be the last time everyone involved seemed to want to make something atmospheric and strange where the goal was just to tell genuinely weird sci-fi stories. The bland military stuff, Picard-as-moral-paragon writing, and Special Message episodes really started to crop up in S3/S4 onward, on a rewatch it's pretty astonishing how quickly the show's tone changes after S2.