I reckon it's also because there are simply so many games available now, and countless devices to play them on. My generation had one console or computer max, and a handful of games. Now young gamers have half a dozen devices at home, and thousands of free or easily accessible titles on whatever platform is currently in reach. They don't need to commit to a couple of titles, when an advert for the next one is a tap away.
I mentioned this before on another post, but I had 5 games on my PS1 as a kid. There are currently over 400 owned games available on the living room Xbox, there's a Switch in the house, the kids have iPhones, iPads and laptops, there's a Quest 2 gathering dust etc etc. That attachment we had to one or two of the few games we owned as kids has to be in part down to accessibility.
I've been playing this the last few days too. I got the game on the Switch for the kids during lockdown and it became an instant favourite with them, but it was disappointing that you could only have one profile that had their own island.
Several years later, we've all got MacBooks, and I have been messing about with emulation. There's a particular emulator that Nintendo killed but forks are still maintained that run incredibly well on Macs. This past weekend saw the three of us reminiscing, each finally with our own island.