If you factor it so an average window cleaner does what, 25 houses, so the pole could be extended and collapsed say 100 times a day minimum, so 500 times a week, 1000 times a month, 12000 a year, and it gets dropped from height once in 2 years(?), so 1 in 24000 chance, if I was a gambling man, I know what my money would be on.
Absolute joke.