A) it has nothing to do with MTA B) They can't foolproof everything, sometimes people just need to get wiser.
If you are a scripter/computer enthusiast/mildly interested in computers. And you have no idea what a file-extension is. Open a folder on your PC, in the opened folder window go to the "Extra" menu and press the option "Folder Options...". In the newly opened window go to the "View" tab, and un-tick the box in front of "Hide extensions for known file types" and press "Apply". AND LEARN!!
IMO this is one of the first things people should know about an OS. But Micro$hit tends to hide the most useful information (go figure).
It has with MTA, read topic again, it writes 'He has stolen many scripts'. After when he steal then he post them on community. It's that normal? No. They can bant him from community and forum.