Note that this is the front camera, which most people only use for video calling and selfies. Personally, I've never used the front camera, so it having only a single lens doesn't really matter to me. Any serious photography will probably be with the rear dual-lens camera.
To be clear there is only one lens on the rear of this pixel and every other pixel ever made. They have never had a dual-lens rear camera. The Pixel 3 had a front dual-camera but still just a single rear camera.
