I agree 100% with @pert
It seems to me this enthusiasm for high-end microprocessors is simply because the technology seems sexy. I don't think they have any clue what practical market they might serve.
My only experience with the more complex Arduinos is the Yun and they made a complete horse's ass of that - both the concept and the support.
The ESP8266 seems to have captured the market for cheap/small WiFi based projects - without any input (AFAIK) from the Arduino team.
And it seems to me there is a lesson to learn from the ESP8266 evolution into the Arduino fold. It was done by enthusiasts who wanted to get the thing working without any expectation of launching a new product onto the market - it was already on the market.
To my mind the high-end microprocessors only make sense for someone (like a washing machine manufacturer) who does not want the extra cost of building a RaspberryPi into a product with a huge production run. That's not an issue for the hobbyist.
...R