You have a valid point.
Thing is I feel these kids are too young to comprehend Madonna, the impact she had at the time and keeps on having now, her lyrics, her message, what she stands for, her influences. Madonna has always been more than a popstar, she's a culturally enriching artists, you have to study her work to comprehend it 100%, you need to have a significant musical knowledge too to understand her. And certainly you're not going to accomplish that with a reaction video on YT.
The point I'm trying to make is that while I'm happy that she's getting some attention from millennials they should just grow up a little and expand their musical knowledge, then come back to Madonna and do a thoughtful reaction to her art.
The only YT reactor I respect is AJayll, she's smart and actually reviews each song, understanding the lyrics and sharing her opinions about them, I'd love to watch some M reactions from her, we should ask her
PS: I LOVE your signature