The "legal stuff" is kinda amazing:

I have tagged this repository with the MIT license. From my understanding this means that the users are free to take the contents of the repo and try to encrypt it all and sell it to each other. Some day, maybe a user will download this repo and reprogram a modified version that only plays the DotA map and use that as a DotA engine thing that they would sell to others and prevent me from modifying or using their upgrades. In my opinion, that is not very cool -- and I do not have experience playing the DotA map -- but I am setting up the repo here so that it does not stop them from doing that. Also, I am guessing that since MIT license probably allows selling modified versions of the code and stuff, this hopefully would leave the door open that Blizzard could download this repo and take stuff out of it and include it in their private Warcraft III game code if they ever needed to. At the time of writing I do not think my repo has anything in particular that Warcraft III Reforged does not have, however, so this is purely hypothetical that I am intending to leave as an open door for the future.

By the time the developer wrote that passage he/she could have just read the MIT License as well as GitHub's auto-generated bullet points several times. 😄