Pixel 9 design language is iPhone 4 design language from 2010 -- which was original iPhone design language from 2005, that didn't ship!
Apple calling back to what was considered their most iconic design language for the iPhone (and now iPads) long before others imitated it, doesn't mean Apple is now copying the imitators.
But those were Apple having fun with Sony fanfiction applied to an earlier Apple design ... turns out the iPhone 4 language was in their design repertoire in 2005, before even the original iphone shipped:
Everyone is converging to the same design, Apple like the others. They all borrow from each other until they all look the same.