Trezor didn't save you, the criminal's lack of knowledge about Bitcoin did.
Indeed they were looking for money and didn't know about the new form of money found online that can be store in a kid-toy looking flashdrive lmao
And some robbers could have just taken a hardware wallet without knowing what it is, to figure out later, or maybe they would have though that it's some sort of USB drive with valuable data? You need to store your hardware wallet in secure place, relying on criminals not knowing what to do with it is just security by obscurity, and this security is extremely unreliable.
They probably thought it was a flashdrive with files in it but to be honest a hardwallet under the bed isn't a good idea for me, you're right burglars could have took it without knowing anything about it, that kinda save you from those bad people and also you're saved coz you used a hardwallet to secure some of your funds. Still blessed I guess.