The junior high I work at started a D&D club this year, and already had enough people for three tables by mid-October.
Every year, new kids become old enough to watch
Stranger Things or
Critical Role for the first time. And WotC is working hard to attract new young players to the "brand" hoping they'll eventually start playing, with and multiple books aimed at young readers (
1 2 3 4).
Which is probably why they want to push the 1.2 OGL so hard. They want to be this family friendly game that attracts young teens to the game, and don't want that jeopardized by offensive or needlessly adult products with "D&D compatible" slapped on the front.