Nope you are not crazy at all, that's exactly what they are doing. It's the same pattern in practice of online banks that are demanding you give them an SMS capable phone, it's so that they can in the backchannel identify you through AT&T, which is really teh corporate face of the NSA (don't argue with me, 33 thomas st. nyc), and the implications there is that they have many things tied together in fusion centers so they can use something like palantir to instantly profile you when you put in that number and it draws in via their backchannel apis your bank accounts into a single view along with your other information, like medical, civic, etc that's literally what fusion centers do. It's all hooked up for THEIR convenience, and its all keyed off now on google's gaia_id. They tether your phone number(s) to gaia_id and voila all these data sources get drawn in....it's all about the convenience to the five eyes/nato people to force you to use their free sandwich stuff and get everyone tied into the central hub of services that is google
So I agree with others: don't use a chromebook. I have an older friend who needed a laptop for work and I made the mistake of getting a chromebook. The f*cking thing didn't do TKIP correctly in WPA2 so it didn't work with my wifi without making major changes to security in a tactical frustration that made ME look like I didn't know what I was doing
It was a G d nightmare, but needless to say I will NEVER use a chromebook again, esp after hearing your issue with the phone
Just get a refurb lenovo from tigertits or newegg and put linux mint debian edition with xfce on it. The end