Sorry but it’s never a stupid idea. It’s only a situational thing where the question is whether you can make it work. That’s not necessarily age related.

Actually going through the other side of this right now with a kid not doing well at school. At what point is it a better idea to consider a gap year? The problem is any age after schooling is interrupted is much harder to get back. Some people make it work, fantastic, but once you hop off the treadmill you’ll probably stop running