Switch is clearly a handheld at this point and is selling like the ds and 3ds clearly to kids. There will always be more kids.
Comparing it to consoles is a bit disingenuous. Especially since it can’t even play 99% of the games released on consoles. Just like the ds and 3ds before it.
The success of the switch should be celebrated but in proper context.
Switch, PS5 and Xbox Series are all dedicated video game platforms and can be compared as such. Just like 3DS, PS4, Vita, Wii U and Xbox One
I don't think the age of people buying a platform really adds much context. If we were to compare PS4 to Switch for instance, does it matter which has the most teenagers or the most people in their 40s? A sale is still a sale.