Totally with you there. I just meant that a dedicated air gapped HD wallet is going to offer the same security (if not more) than an air gapped encrypted PC.
This should be true in theory, simply because attack vector for airgapped hardware wallets is usually smaller than for general purpose computers/laptops.
And there is big advantage that hardware wallets can be almost fully open source, that is something very hard to achieve for laptops, but it's not impossible.
I don't see any reason why we can't use both devices and combine them in some good multisig setup.
When we make a general comparison, encryption increases your security, so you cannot say the opposite or the same.
Not all encryptions are always good, and sometimes they can damage your security.
Telegram claims their are encrypting something, but nobody can verify their claims, and we know many examples of broken encryption in past.
I also remember a case of ''encrypted'' phones used by criminals and create by three letter government agency.