Most people won't have access to, or skills to use fancy equipment to make steel backups, and the steel products to store seeds can often be prohibitively expensive for many.
I've said multiple times before that all my paper wallets and paper back ups are on paper and I generally don't use steel or metal back ups. Yes, paper is cheaper, easier to work with, etc., but the main reason is this: I have redundancy. You should never have a single back up of anything, particularly not your seed phrase or bitcoin wallets. A minimum of two back ups in two separate locations is necessary. Now, what are the chances that a paper wallet in my house is destroyed in a fire and a duplicate paper wallet stored in safe deposit box at a bank in another city is also destroyed at the same time? Vanishingly small.
If you like metal back ups, then use them, and I accept they have some significant advantages over paper. But metal back ups are still not 100% guaranteed to be readable or even still be there when you come back to them. Two separate paper back ups is more secure than a single metal back up.
It would be better if there was specialized software that you can download and install that is just for generating a paper wallet.
There is this tool from user Coding Enthusiast which will turn coin flipping entropy in to a seed phrase or private key:
https://bitcointalk.org/index.php?topic=5373505.0. It doesn't go as far as generating addresses, though.
I could probably snap a CD into a few pieces with my bare hands, but I don't think my mother could. She would certainly need a $5 wrench.
I would not be happy with one or two large snaps across a CD to know for sure that data could not be recovered from that CD. If you don't have a shredder, I'd be taking a blowtorch to it.