The Ulefone 18t just lanched with the same flir sensor, but android 12, 12gb ram, 256gb flash. 9000mha battery and endoscope accessory attachment, same durability specs, marginaly cheaper.
There are rumours that the mstcpip stack had large parts of the bsd stack in it. I cut my teeth in windows networking using Windows for workgroups, with a novell tcpip stack and a 64kb daemon Internet Internet connection over isdn. Having that network connection meant I could (1993) get some linux/freebsd setups, but I would have to leave the ftp connection running all night. I then diverted off full time into freebsd when I joined Yahoo.
My favorite Peeve about the arduino boards, was the half pin center shift on one of the headers that makes it impossible to just plug in some perfboard with headers on it and make your own shields. Thus opening up the path to selling expensive shield hardware.