Thoughts on some notable usage differences between November and December:

40.931% -> 35.855%
Midgambit's noticeable decline in usage makes sense. Bro ain't him anymore. Its much harder for Gambit to land those free sweeps like it did in prior metagames, esp with a much wider pool of Pokemon forcing it to Tera, which won't always be an option on the table. Getting KO'd by stray Low Kicks ain't fun. Even with Tera, the opponent having Zamazenta, ID Corv, or Moltres in the back make it harder to sweep. Tech like Mental Herb Tera Fire is cute, but comes with massive oppurtunity cost imo vs King's standard counterplay like Tusk. These days, I'm personally using King more as a check to Gholdengo and Pult than a wincon itself, which imo is a far healthier use of its talents.