Hey sissypants, we don't live in a bubble and lifts like this exist all over the country. When was the last time you fell over sitting down? Im guessing never.
I guess if my desk chair were susceptible to being covered in snow and ice, moving at 5-10 mph and subject to random abrupt stops it wouldn't be all that uncommon. Especially if I were a 40 pound kid wearing a quarter of my weight on my feet. But yeah, improvements in safety should never be made.