Biometrics are an username, not a password.
Signing into an account on a remote server? Probably not. To access the secure enclave on a device that is with you for 100% of your life? Probably fine.
Most houses don't have locks appropriate for bank. Many people do get by with weak passwords in many situations.
But acknowledging the weakness of this sort of security is still important because a given person has to consider the threat they face (activists who may face repressive state should what good and what bad security is still) and because new exploit method can appear.
The notion, however, that a device shall be with you for 100% of your life is not fine at all. It's totally dystopian.
In some cases they are totally appropriate as passwords. For example fingerprints & face recognition for building access.
(And before you say "but someone could copy your fingerprint from a glass and wear a prosthetic mask that looks like you!" think about how you would break into "password" style building security - PINs and access cards.)
If one still finds themself disagreeing with this, consider the difference between what it means to choose a new username and what it means to choose a new face.
Huh, why is that fine for building access? Someone can enter your house by just having a copy of your fingerprints or face data?
Don't imagine that all security has to be mathematically perfect, especially in the real world.