In general, hubmotors derailleurs just don't see the same heavy pedaling force seen on road bike gears ridden by fit bike enthusiasts. The DNP freewheels, weak as they are, will last a long time on an ebike,
The pictures ofr the "bestest motor inna world: for that model R sure looks like a direct drive to me. Not aware of many 1000+ watt geared motors. If it is geared, then it is. I do think a single gear on a 50 pound bike is foolish, and cannot see a drawback to having a 7 soeed, unless they got frames that were too small and have to be spread to fit a frreewheel.