Considering we've had 4 generations of being able to travel through/to Kanto, I wouldn't say it's unlikely that younger fans have experienced Gen 1.
I would absolutely say it's unlikely. I provided a reasonable timeline as to why it's unlikely. Here it is again, for anyone who missed it.
An 8-year-old here in 2018 was born in 2010 and has very likely never experienced the Kanto region in a headlining turn (1998, 2004) or as the back half of the Johto template (2000, 2009/2010).
MAYBE little Timmy, born in 2010, who got his first 3DS in 2016, went and came across a six- or seven-year-old secondhand copy of HG/SS and knows Kanto to some degree that way? But I would argue
if a current kid has experienced Kanto, it was through the Generation I Virtual Console release, and both of those are so different from what LGP/E are that it's a quantum leap between the two.
So again, this case of the hypothetical kid who "can't appreciate Kanto" because they weren't around in 1998 doesn't hold up to much scrutiny.
It's very easy for those of us who have been playing since 1998 to
forget (or sometimes simply ignore) that we've been playing since 1998, and that there are younger gamers out there whose experience with the franchise is but a small window compared to ours. And if their Pokémon window only started at a certain year, then yes, there are whole regions they've never experienced in any way.
Sinnoh is one of those regions right now, having not appeared in a game in any form in a decade. We accept this, and yet somehow when it comes to Kanto, which hasn't headlined a game since 2004 and hasn't appeared in any form since 2009/2010 - nearly a decade ago - certain people are content to say "no, everyone today knows Kanto, this is too much."
Especially considering how common things like emulators are becoming
I don't care in the slightest "how common things like emulators are becoming" because emulators don't belong in polite conversation, and I guarantee you Game Freak didn't factor that into LGP/E's calculus.
If you're going to try and quantify what someone has experienced in an emulator, you might as well never release any kind of remake or port ever again, because some numpty somewhere still thinks it's cool to not pay for entertainment.