Got mine today and got a gap on the bottom of the device i can run my finger nail in. No gaping anywhere else. No gaps whatsoever on my pixel 3xl, defo not designed that way, manufacturing error/poor build quality.
Google service seem to think it's acceptable to dismiss the issue by saying it's part of the design, if it was part of the design why is that people are reporting differences in where they appear. A friend's pixel 5 doesn't have any gaps.