Hardware wallets have no guarantee because they can still be hacked and again you still need to keep your private key off the hardware, these hardware wallet can get damaged too so still backing up your private key is certain
Only if the hacker can access physical hardware wallet, if you want to be safer, do with a passphrase after seed.
Smartphones are spyware tool themselves. So many ways of tracking
Android or IOS?, are we need uninstal all software on phone before use it?,
I always end up formatting my PC hard disk every two to three months because of unknown software that landed on my PC or trojan presence, that's even when I sense their presence on my PC.
it's washing your time backing up your file every three months, you need 2 PC, one for browsing and another one for wallet only.