I agree with the need to have an offsite backup, but only having this backup still leaves a realistic possibility of data loss. You will typically leave it unattended at the bank for years and only try to access it when you lose access to your wallet. At that point there is a possibility that you find out that the backup can be corrupted (if it is on an usb drive) or is otherwise inaccessible.

Generally the best practice for backups of personal data is the "3-2-1 rule" where you have:

That way if either your onsite or offsite backup is corrupted or inaccessible the other backup copy is still likely to be valid and accessible. So basically I would say to both keep a backup at home and one offsite in a safe at a bank.

If for some reason you don't feel safe using a seed plate you can also use an encrypted usb drive or multisig, but there are caveats there. Your seed should -never- touch a system that is online, so you need to use something like TailsOS to make the encrypted usb. Also a very real risk is that you lock yourself out of the backup, so you should only use these if you are comfortable working with them (keep it simple stupid).

Also practice restoring your wallets from backups on a regular basis to make sure it works as expected.

In general I feel that making safe and secure backups of your seed phrase is the most challenging part of using bitcoin, so please let me know if I am missing something.