Xfinitywifi broadcasts on the same channel as the customers network, along with a 3rd hidden SSID they won't explain. (Current theory is its for their security

Xfinitywifi broadcasts on the same channel as the customers network, along with a 3rd hidden SSID they won't explain. (Current theory is its for their security systems, who knows.) It absolutely impacts their shitty routers performance, and causes wireless congestion. I work support for some consumer wireless equipment and there are lots of times where the only improvement is disabling xfinitywifi. I don't understand why anyone supports this- it may be ok for a middle of nowhere town, but in any reasonably populated building it literally doubles the number of wifi networks, which is a nightmare when you have a big apartment building and 2.4G interference.