The fact is that trad window cleaners are artistes, think about it, not even a tight rope walker practices his act for as long as window cleaners.
Did these stats include people that had accidents cleaning their own windows?
An experienced shiner makes a risk assessment every time he goes up a ladder, and the more experienced he is, the more risks he is aware of.
I came off once in 11 years trad and that was because some idiot had fitted a tilt and turn window upside down, I put weight on the bottom to clean the top, and the top swung out and pushed me off the ladder.
The unexpected can happen, but I never assumed anything after that.
My son has been a trawler man since 1986, he's lost the top of one finger, and his mate suffered a badly broken leg 3 years ago, and his ship is a hell of a lot bigger than the ones you see on the trawler programme. 12,000 tons of mackerel to catch before the end of the season in March.
I know which job I would rather be doing, he's welcome to his 50k for 4 months work.