Earlier quoted context omitted.
The phone company is still tracking your IMSI/IMEI, and they sell data too. The former is directly linked to your identity; the latter also trivially so for most people.
I understand there is a separate level of privacy issues caused by phone companies selling data, but all of the reports refer to data collected from apps which can't be IMSI/IMEI since that's not available from apps?
https://www.zdnet.com/article/us-cell-carriers-selling-acces... https://www.wired.com/story/carriers-sell-location-data-thir... https://www.ccmihub.com/blog/fcc-fines-mobile-providers-sell... https://www.usatoday.com/story/tech/2019/05/06/at-t-verizon-... https://techcrunch.com/2019/01/09/us-cell-carriers-still-sel...