Earlier quoted context omitted.
Some of these companies are now designing the phone on the assumption you're going to case it. No other reason to make a Pixel camera bump w/ scratch-vulnerable screen stick out so far.
If that is the case, then either the phone should come with a case or it should not be marketed as a complete product. How about making the phone more durable by adding 1 mm to its thickness, so that a 50 gram, 4 mm thick case won't need to be added.
Without a case it's like holding the last gasps of a bar of almost flat soap. Also keeps it from sliding off surfaces.