Ultimately, the season combines story-of-the-week episodes with an ongoing anti-t***p resistance theme centered around the characters of Liz and Diane. The show is unashamedly anti-t***p and ties a lot of things from the real-world (or variations of them) into the storylines (e.g., the plaid-shirt guy getting kicked out of t***p's rally, the unqualified judges being approved, etc.). So, if you love the orange genital wart you will hate that part of the show, but realistically, if you were paying attention from season one, it just amps up what they were doing before. On the other hand, if you hate agent orange, you will either find it highly amusing or ignore it. The show does a good job of not painting those involved in the "resistance" movement as heroic or all-good. In fact, in the season finale, the show sets up them as a potential "bad guy" in season four.
Overall, the season is very good. It tackles issues like the "me too" movement, climate change, race relations, etc. There is quite a bit of cast turnover, with some characters being put on the back burner and others getting a larger role. Michael Sheen was excellent in his role as a morally compromised, drug-addled lawyer who was sometimes an ally and sometimes an enemy of Reddick, Boseman, and Lockhardt. Christine Baranski does a great job again as the series lead, and it continues to be well-written and acted.
To me, the one thing it lacked was balancing stories for all the ensemble cast members. It is a very large cast, and given that there are a smaller number of episodes per season (this one had just 10 episodes), there was no way to give all the characters compelling stories. Like the prior seasons, the episodes vary in length from about 44 min to 55 minutes, and because it airs on CBS All-Access (now Paramount+), they can get away with swearing and more risque sex (the latter of which there was really not any of this season) as they could on The Good Wife. The political themes do not bother me. I do find some funny and others silly. But of course, many times when people complain about a show getting into politics it is because the politics are against what he or she personally believes. But, given that the parent show, The Good Wife, was very heavy into politics, it is not a shock that this one would keep at least some politics in the mix.
The DVD set is a three-disc set. For those who get the DVD set, I would describe it as a MOD-plus set. It does have a few extras (deleted and extended scenes for some episodes, a gag reel, and the pilot episode of Star Trek Discovery), as well as captions. But, there are no commentary tracks, behind-the-scenes, or making-of features. So it is very bare-bones. Overall, if you liked the first two seasons, you may, but are not guaranteed, to like this one. That will depend largely on who your favorite characters and storylines from the first couple of seasons were. If you did not like the first two, then there is nothing about this one that is likely to change your mind.