You are right about seed phrase storage it is big problem with no easy solution because information is so private.
I don't see any complicated issue or big problem and hard solution for making my wallet backups and keep backups safely. If you are careful, and stay humble, don't make noise, have good habit online, you won't be hacked and nobody knows that you have bitcoins.
Your habit and action mainly contribute to make your wallet backup, backup storage and your Bitcoin fund safety better and more easily to do in practice.
Every way you try to save it has serious drawbacks.
Every method has pros and cons but serious drawbacks, really?
Many ideas for storing them seem too complicated and you are right we need method that lets us get our seed phrase back easily when we need it. This just shows how hard it is to find simple and safe and dependable way to store this very important information.
Don't use complicated wallet backup methods like seed splitting as those methods are very risky.
If you know that Bitcoin private key can not be bruteforced, if you do seed splitting, and you lose one or two parts of the seed splits, you will lose that wallet, can not recover it and will surely lose your bitcoins.
How to back up a wallet.Bitcoin seed security analysis.Why is Seed Splitting a bad idea?