I found this article today that goes into more depth about vaccinated vs unvaccinated transmission rates (it is written by a doctor, not a journalist or blogger):
https://www.theatlantic.com/ideas/archive/2021/09/the-vaccinated-arent-just-as-likely-to-spread-covid/620161/
RE: The Selfishness of Not Vaccinating: Choosing What is Easy Over What is Right