Mods can help a lot!
For example, there’s a mod to increase the text size: https://www.nexusmods.com/eldenring/mods/650 (It hasn’t been updated for awhile, so I don’t know how well it’d work for recent patches)
If the game is just too difficult, there are also mods to help with that. Mods can adjust the difficulty, add FP regen, unlock summoning, etc., or completely overhaul the game (I had a lot of fun with the Convergence mod last year)
It’s certainly an interesting project, and addresses an important concern (link rot). But the security implications of archiving arbitrary sites/js and then running that on your own domain are rather horrifying to me (especially if this would be used for any user supplied links).
Personally, I’d rather have a service that automatically submits any external links to an existing archiver (archive.org) and then falls back to that source when the original 404s, rather than serving those pages/videos locally.