I went and had a chat with Perplexity.ai to see what it had to say. Short version, it agreed with you on the 22-24-episode season for 90's shows, citing "Star Trek" (TNG, DS9, VOY) doing 26 episodes per season was more an exception the standard. The More You Know... (NBC star).Actually most 90s shows only averaged 22-24 episodes. The Star Treks were the only shows which were consistently putting out 26 episodes every year.
The 2000s and 2010s is actually when 10-20 episode seasons became common, particularly among cable shows such as Game if Thrones (10) or The Walking Dead (16).

The TV shows I like (that are not Star Trek) were always about 20-24 episodes per season all the way up until streaming.

