Its was quite painful to read the few comments of this thread. Its obvious most users here aren't very well informed.
There's too much drama about this situation when there was already a leaked image that shows an option that says, eyes need to be opened for face authentication to work on the Pixel 4. Most likely Google will introduce the option with the first or second update they push to the Pixel 4.
From the hands on I've seen Google's Face Authentication is very fast(faster than FaceID at first glance) and form a security stand point, it can be used with mobile payments and bank apps so I don't see a problem there.
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