When I was teaching in the United States, I often held exercise sessions with students during my free hours — hours I chose myself. The students appreciated it very much, even though obviously not everyone could participate. I wasn't teaching new material; it was simply to deepen what had already been covered in class.

Imagine if someone had complained saying they couldn't take advantage of that extra help because they had to work or go to a football game. It never happened.
If YouTube had been around back then, I would have used it exactly the same way: maybe without insisting on live participation, but asking students to watch the video by a certain deadline and leave a comment or response. Schiettini simply proposed creative and modern ways to learn. That’s why he should be praised, not accused.