TrueCharts (third party app repository for TrueNAS) does this and it drove me crazy until I eventually gave up and moved everything to Docker. Lack of serious documentation was just one of the many reasons.
Through a faraday cage? I mean, maybe… but have you checked if you can just turn the wifi functionality off on the ISP device? Most will let you do this and it would be way easier/cleaner.
This guy was commuting three hours per day?! Yeah, no wonder his quality of life improved after he stopped doing that. Unfortunately, I don’t think his experience is going to be very generalizable because most people don’t have a commute length that extreme.