For some users, preventing downgrades to an insecure version is a better product since it protects against evil maid attacks.
(Although ideally they would itself trap that functionality behind a fuse, so you have to opt-in but can't be opted out.)
You can get a similar level of protection against evil maids by requiring a wipe to downgrade.
You can get a similar level of protection against evil maids by requiring a wipe to downgrade.