I've taught tailwheel in a range of light aircraft (Jodels, Cubs, Citabrias, Stearman, Texas Taildragger (converted c152), Decathlon, Cap10b/c, and others). Unless the student is unusually experienced, has flown gliders or is "a natural" it usually takes somewhere close to 5 hours to convert them and I'm surprised that people claim it can be done in much less.
The wheeler vs 3-point debate is an interesting one. I teach 3-point landings first (with wing down for crosswind) and only add wheel landings if the stude wants to learn that technique, if they have picked-up the other technique unusually quickly, or if they come back for refresher training.
A big consideration is the typical runway length that people operate from - 750m can disappear quickly when learning to wheel land in nil wind
and many strips are much shorter - maybe you have the luxury of longer runways, Chuck.
Another reason is that, from experience, the aircraft that people generally fly can all be landed in the 2/3-point attitude in reasonable crosswinds. If the wind is higher I would expect private pilots to find a way to reduce the crosswind component by changing the line, the runway, or the airfield because even if you successfully wheel it on there still comes-a-time when the tail needs to come down - and it isn't always going to be possible to run-off into wind.
Edited to add: manufacturers publish landing performance info which is presumably based on a 3-point landing - wheel landing distances can be highly variable so how do those that prefer this method calculate their landing distances?
HFD