Fatbeeman sells bees from the state of Georgia and is required by law to treat regardless of his mite count.Yes well that's interesting Squarepeg.
Seems to me that most folks who want to do things treatment free will also be of a philosophy to set themselves up with either small cell or foundationless so that is overweighted among treatment free'ers. But there are those who have been just as successful with 5.4 cells. Where is StevenG these days?
The most well known supplier of treatment free queens, Weavers, do not use small cell and in fact I once saw him scoff at the idea. One of the best known suppliers of small cell bees, FatBeeMan, has to treat.
There must be a whole bunch of stuff in the mix that we do not realise.