No, lets say I am managing 100 peoples crypto wallets... if that makes people understand better. I would what a place where I can easily view the wallets, transact, swap , etc .. obviously i don't expect to swap and transact all wallets from one screen but at least view all balances.
You are not an exchange, and even they don't have 100 private keys and seed words.
They all use just a few keys and they can generate infinite number of address for their customers...this is obviously much safer.
You can try to be smart doing different thing but I bet you would soon mess sup something managing 100 backups and keys.
I don't even have a safepal hardware wallet, I'm literally only using it for this function. I know my security, we use trezor shamir backups but this is beside the point.
You obviously don't know much about security, since you are using closed source safepal app, and you didn't explain what exactly you want to achieve.
If you already have Trezor just use their own app that is 100 times better, safer and it's open source.