Earlier quoted context omitted.
Both the product and the landing pages are so generic that I would have a hard time calling them a rip off. Every major audio/smartphone company has a product with very similar featurset in their lineup, and this is just Google following suite.
The products and pages look the same since they all copied Apple. The same thing has happened with packaging. I guess you could technically call it standard now, but it all originated with Apple.
Bragi crowdfunded "The Dash" in early 2014 (to much publicity) and released them in late 2015. To my knowledge this was the first high-profile pair of "disconnected wireless earbuds".
AirPods were released late 2016, so a full year later, so they were not the first with this kind of a product by a long stretch. By that time, Bragi already released a second stripped-down version of their product. The Pixel buds also much more closely resemble "The Dash" than AirPods.
As for product pages, I sadly don't have paper trail, but I'm sure people more into the topic can find examples dating back ~10 years for pages where the product twirls around the page while scrolling (and there is nothing more connecting the product page for the Pixel Buds and the AirPods).