I don't see this. Lots of kids were forced to learn an instrument but I don't know many who plays an instrument well enough that anyone would want to listen to them. Sure people get a bit impressed that you can play anything at all, but it isn't like they find it enjoyable to listen to it.
> Getting into master's league on StarCraft is only impressive to people who play StarCraft
This isn't true, most gamers who are loosely aware of what StarCraft is would be very impressed. Like people read articles about starcraft pros and talked about how impressive/insane those were without ever playing the game. Being really good at any game at all will impress a lot of people and especially so for the more famous ones.
But of course they would just be impressed and end it at that. Similarly being able to play piano really well would just impress people, very few actually wants to listen to piano music as an activity. Piano might impress a few more, but I doubt it would make you more friends and conversations than being good at Starcraft, at least among young men. And if we instead take some more popular game today like Fortnite then 100% being good at Fortnite will be way more important for your male social life than being good at an instrument.
It's not true that few people want to listen to someone's music as an activity. Just go to most parties where someone can play the guitar or piano well and if there is such an instrument you'll see people play them. Happens very often in my friend groups.
https://everythreeweekly.com/2013/12/that-guy-who-brings-aco...
Another example:
https://old.reddit.com/r/starterpacks/comments/76k1c0/guy_th...
To me it doesn't look like people appreciate them, at least not the men.
I'm sure some people try to force it and it gets annoying. Humans love being musical in groups though and always have.
> This isn't true, most gamers who are loosely aware of what StarCraft is would be very impressed.
"most gamers".
Q. E. D.
You're comparing achieving a goal to working towards it. It will take roughly three to four years to reach master's league on StarCraft for even talented people. Meanwhile, almost everyone can play the piano or the guitar well enough to impress laypeople after 2 years of lesser daily effort.