I can see how someone might think that, but I don’t know it for a fact. It’s just a piece of plastic. If you take care of it I don’t see why it wouldn’t work for decades. But even if stopped working, it has a Backup password in back of the card, which you can use to create a software key to sign a txn. And you can write down that backup password on a piece of paper/metal to hedge against losing the TAPSIGNER.
I wouldn’t recommend having all your funds in single sig using a Tapsigner, but it makes sense for secondary wallets with smaller amounts and/or as a part of a multi-sig set up. Nunchuk uses it as the inheritance key in their paid plan.