Has young adult fantasy become rote as a genre?

I opened my book blog in 2019 after taking a hiatus from reading for about two years. I'd missed out on the changing trends in book popularity. Young adult fantasy had become the hottest stuff on the market, and I had a lot of catching up to do, having last read Rick Riordan's The Sword of Summer (2015), sometime around 2016. Without further ado, I turned to the Bangladeshi