It doesnt matter what the ratio is if the scout leader wont jump in and save the child. What if the kids to scout leaders ratio was 1-20? who cares if 20 leaders wont go in the water?
All I know is: that I am not going to let my grandkids go scouting with these scout leaders.
Many years ago I took my scout troop to a local pool one night for a swim test. I required the boys to swim nonstop, fully clothed for 100 yards before they could even get into a canoe on a lake for a ride. I got them at the deep end of the pool and told them to jump in and swim two full laps. One boy who was new jumped in and went straight to the bottom. He couldn't swim a stroke, but was ashamed to admit so to me or his peers. We fished him out and I assigned one of my Eagle Scouts to teach him to swim. Within a month he was going off the low board and scaring his mom as she thought he was going to drown. He is now a successful businessman and is taking his kids canoeing.