it's certainly safer than a normal computer.
Why? There isn't anything special with a Raspberry comparing it to another computer, being it whatever size or architecture. A Raspberry is as safe as any other computer, which means it is as safe as its owner wants it to be.
I agree with you 100%. But I'm comparing the Raspberry Pi to another dedicated machine for Bitcoin (which is often secured just for that purpose).
It's certainly safer if you just use it for BTC in comparison with having a wallet on a PC (or Mac in my case) you use daily.
But, once again, it depends on how safe the user wants it to be.
That being said, yes, hardware wallets such as Trezor are probably more safe than a computer
Something is only as safe as the owner wants it to be. Trezor could be stolen, Bitcoins could be hacked, nothing is 100% secure. Although, Trezor, KeepKey and other hardware wallets are your best option thus far (except maybe a paper wallet).
