Old Trezors may also become obsolete or need updates. Don't forget that these state led agencies also buy hidden stakes in these companies. We may not even get to know if an organization like the CIA or NSA is involved in any particular way when it comes to hardware wallets.
Some hidden and some not so hidden. All these states ask banks to look at the underlying companies who own money transactions but the truth is there is a lot of "good states" who are as dark as the non-state rogue actors.
If we think Ledger and Trezor etc do not already share our data directly,,, we are such fools:)