While true, in order to get Linux mobile more mainstream, you have to have great google compatibility just because of the sheer volume of people that have to use google calendar for sync with family and friends and/or have gmail as a primary email. That’s just a shitty fact of life. Baby steps.
However, indeed you are completely right that at the current time there are probably a very low amount of people wanting to use it right now that are completely reliant on google.
It is the Mac of network hardware in my corporate - entered experience.
It is aesthetic hardware, marketing, and everything software related looks polished on the surface, but is buggy (particularly their access which is the worst thing to be buggy) with the least possible configurability, completely obscured debugging resources, and proprietary ways to make you reliant on their support services.
That being said, I am still using them because I got a 30€ UAP-AC-SHD from my company’s old stock when we switched to Cisco hardware. And their cloud gateway ultra is a good value. My whole house setup with prosumer hardware will be 140€ and where my internet comes in is the worst place in the house to put a wireless router.