Loyal Assassin Jafar
I notice there are a lot of trend genres.
This is nothing new by any means. You'll notice it often in anime history.
The late 70s had a super robot boom, 80s was pretty big on sci-fi and futuristic/post-apoc anime, 90s was a pretty big shounen boom, probably to cash in on the success of dragonball, 2000s seemed to have a prevalence in slice of life to some degree or another, and that's continued. I'm not really sure what I can say the prevalent trend of the 2010s is