For simple PC unlocking etc. they are perfectly fine and improve security due to their far higher usability.
The same way 10 key files on 10 different locations combined with this and that are more secure than a simple 60 character password. But the simple password is far more practical, so far more secure overall since people actually use it.
Imagine if we had image sensors that could filter like that. Boom, video 100 times smaller in size. “Autonomous” surveillance cameras running on fractions of the power. Etc. Etc. Just far more efficient.