There are variations of the original version though. But there are some important variations missing to detach from reality so people could have less controversial or provocative dilemma. For example:

1.If there are 50k people instead of 5 people on the other track?

2.If the decision maker is not a bystander but an operator whose duty is responsible for the safety of the system?

3.If two tracks are invisible (Except the switch operator) before the switching happens. And only one track could be left to be seen by modern human's eye after switching happen. Ether 50k die or 1 die but there's only one track left.