> Isn't that a good thing for me as a consumer? I like the ability to decrypt and modify my own devices.
If you're the sort of person who buys wifi-based-internet-enabled door bells, but you don't want someone who steals your doorbell to (a) be able to extract your wifi password or (b) be able to get the thing to work at all, you might appreciate resistance to the thief's attacks.
Of course, you can also address this security concern by just not buying an internet-enabled doorbell.