And not only them. Regular people are the same. If you are called to help with something, even move furniture, it's either all is smooth except one thing if the people are organized or it's more like "the car can't pull the trailer, the trailer is too small, the furniture breaks apart by itself and so on). All is bad.

Most people that need help are in the latter category. It's the same for jobs. Jobs that get posted online most likely are bad jobs.