In almost all professions you need to take an education first.
Nobody can start immediately as a doctor, lawyer, carpenter, plumber...
Before you get a driver's license you need to take practice.
Sim trading gets you the basic education and the first insights in what trading is.
As no education is like reality, nor is sim.
The most stupid thing you can do is start to trade live without doing sim first. Except if you are a genius. And apparently there are quite a few (not to say the majority) of these supermen on ET. That's why it is called ELITE trader probably.
As said prior...
Once you know the ins and out of your platform and how you will use it, sim trading has no benefit.
Of course, if you are like the poster previous to you and you don't have a system or know how to read charts, you are no where ready for the activity of trading, in any format.