No, the bill says they must take reasonable steps to prevent underage persons from accessing their services. Arguably, this means embedded videos will need to be restricted just as the regular site will be.
Grant Sanderson's mathematical animations and visualizations are famously excellent, though. He developed his own mathematics animation software just for his channel. I wouldn't think of video as preferable to textbooks for math education in general, but for his sort of videos, I might!
