A few months ago I pulled my PS1 collection from storage to rip to ISOs, for emulation and backup. I was too late as the discs, despite being in fully opaque containers, were damaged and partly unreadable, one disc was 50% unreadable. And this is all for emulation -- if I wanted to play on a console I'd need a modchip to read CD-Rs, so if you backed up your Blu-Ray PS5 discs today, you wouldn't be able to play them on a legitimate console in the future.