Comcast do allow you do use your own.
The free wifi do NOT use the renter data cap.So when your neighbor pirates your wifi and torrents 1 terabyte of data and sends you way over your data cap, Comcast gets mad at you for Comcast enabling free public wifi?
Except the vast number of research studies saying it is safe. Along with the fact that every living thing on Earth is bombarded by radio waves and has so since the beginning of life. Given that the universe pumps out radio waves. Which is the static you hear on radios or used to see on analog TVs.I just hate some companies, something like this should be optional and IF opted in - reduce the price of the package - Why pollute the home with even further radio-waves (that still none can say for certain its safe).