Hm. While I usually avoid Wifi where- and whenever I can, recently I couldn't. Booted some live Distro into RAM, fiddled whith settings(because not used to WiFi, got it?), almost had screaming fits, until I discovered I could switch from that Networkmanagercrap to Connman and everything worked. The GUI which enabled that was this https://github.com/andrew-bibb/cmst
Where the use-case was a simple connect to that fucking T-Offline hotspot at the edge of reception and automagically point some browser tab to the captive portal, FAST!
Also RECONNECT fast!
It's desktop usage is abysmal with no GUI supporting its up to date API.