SSD
It's you that is missing the point, the aircraft you talk of are from an age when labour was cheap, parts expensive and air travel was only for the very ritch
The DHC-1 is a typical example, it costs lots to run, costs lots to maintain and flys very slowly. The only thing it is good for is as a military trainer ( and at that it is superb) and yet the very moment someone who has another role for the aircraft (in this case as a glider tug) and optimizes the aircraft for this role by putting a lower cost power unit in the front you witter on about the aircraft loosing its sole.
What the aircraft is doing now is economically pulling gliders into the sky at a cost that the less wealthy club members can afford...........you are thinking about the aircraft loosing its sole...........I am thinking about the glider pilots who are flying because they can now afford the aero tow and those who are NOT stuck on the ground because the Gypsy has quit for the umpteenth time.
Old aircraft do have there place but they need viewing as part of history NOT the only pure way to fly.