Fat Bikes / Fatbikes

Surely gears are more useful when -

Your bike is relatively heavy
You are carrying a lot of stuff
Your journey is relatively hilly
The terrain is relatively challenging (snow, mud, rocks)

If you are going to use a fat bike for a flat commute on - say - a canal path then SS is probably fine, but then you are using a fat bike in circumstances where the strengths of the bike are not really being used.

Obviously gears would make it easier to do all those things you mention but I'm sure people ride non-weight weenie ss mountainbikes laden up, over hilly and challenging terrain too though and simply gear them suitably. Infact I know they do, because I do. My 1x1 is geared for off road so when I commute it's a slow commute (compared to say riding my Pompino which has a much bigger gear on it).

Seemed like you were saying ss and fat were mutually exclusive and I don't see why that should be so.