I literally have a footlocker filled with old disk drives (remember, since 1979!) and I have never, ever gone back more than a few years, hell, more than a year.
Now that disks are big, I keep a lot of old stuff. I have, eg, screenshots dating back to 2015. Email before then. And so so much more.
I have never gone back more than a few years.
I will continue to archive because I must but, Old Person to Young People... Don't put too much effort into long term availability. It's not a good investment.