ComCast Public WiFi The article didn't mention if a separate DOCSIS modem is tied to the hotspot or if the bandwidth is shared with the consumer. Further, it didn't mention whether the second "network" (assuming SSID) is sharing the same WiFi channel or if it's a completely separate WiFi Radio.
Personally, as long as it's secure, it seems acceptable if it has it's own DOCSIS modem and it uses a separate 5ghz 20mhz channel. If not, I'd turn it off as I don't want to share the bandwidth I buy with others and the 2.4Ghz band is already too congested. I'd prefer to not share the 2.4Ghz band at all or a channel in the 5Ghz band because that compromises the experience I'm buying.
It might be OK if the DOCSIS modem is configured to allow double bandwidth and the router/wifi device handles bandwidth throttling. However, I'd still be concerned about sharing DOCSIS upload with the public WiFi hotspot. Given the imbalance in typical DOCSIS implementation speeds, one video upload from a mobile phone will take a heavy toll on the overall performance of what I'm buying.
If Comcast gave a discount to share the bandwidth I buy, I might consider it. Rather than a discount, they could also double my bandwidth with the understanding I would have to share no more than half of it with the hotspot and when the hotspot is not being used, I get it all (double), that would be OK too.
Of course as a Charter customer, all of this is conjecture since I'm not (yet) a Comcast customer.