I know of almost zero kids that enjoy practicing their instrument as a kid yet I believe the majority of adults are happy for the experience. (I have no data tho). I certainly just wanted to do other things (play with friends) so I showed no or not enough interest for my parents to push/encourge learning an instrument.
Assuming I'm correct following the advice of "see what they're interested in" would seem to lead to worse outcomes at some level.
of course I'm not suggesting shoving things down their throats so to speak rather it seems like there's room for some balance between only encourage their interest and require them to do x?
My son is learning an instrument from a very young age and almost all of the drive comes from himself. Of course he doesn't always want to practice right now, so we have to push to encourage consistency, but he's so passionate he wants to keep at it even when it's hard work and stressful for all of us.
I'm sure one day, "I don't want to practice today" will evolve into "I want to quit" and I'm dreading having to determine if that's really a life choice or just temporary (week? month? year?) hurdle we should push through.