...icons on a grid resemble iOS, sure, and about a million other UIs.
Should my car manufacturer switch to square steering-wheels for better differentiation?
When an UI works well then by all means copy it. Apple should not be allowed to hold back an entire industry just because they happened to be the first to come up with a sensible icon-layout for touchscreen-devices.
I think you're the one being incredulous/insincere here.