Stretching Like A Gymnast
Typically, a rope’s constructional stretch won’t last long. It’s possible to extend the life of certain fiber core ropes by using them with mild loads, which may result in a significant amount of constructional stretch. However, it doesn’t mean people can do the same, as the girl in the footage. Considering how small elevators are, trying to stretch out will just make the experience worse for everyone inside.
She made the mistake of doing it here where her leg was extended at a 90-degree angle, making the other person uncomfortable. Elevators are already too cramped and if you kick other people there unintentionally, it may not end well.