Hardly a BoardingArea apologist, but Boarding Area and the "TPG Network" are two vastly different things. TPG isn't even really a network, but rather a brand operated by Bankrate, a corporate entity with control of its advertorial content.
The "blog" isnt "moving" per se. Rather, its brand has been sold to a financial services marketing company, just like The Points Guy itself.
Mile Nerd had a good post https://www.milenerd.com/2018/07/thoughts/