Short review for now. I hope to post a longer one later.
The season finale of Loki, entitled "For All Times. Always." is… well, what I texted a couple of friends who are also fans was, "That… that actually worked."
Does the ending answer the questions raised at the beginning of the first episode (specifically, What is the Time Variant Authority, Who are the Time Keepers, and Why are they preventing alternate timelines?): Yes, yes it does.
Is there a fun fight scene near the end: Yes, yes there is.
Do we see bad guys get what’s coming to them: Yes. Not everyone, but yes.
Did I feel that the time spent watching the series was worth it: Oh, my f-ing goodness, YES, YES, YES!