I believe the Mind Stone enhanced what was already there and even so they didn't need a machine to continue to use that ability. But they changed Taskmaster to much, like they did with the Ancient One. I didn't mind, I'm not into the character but I get why people were upset that they turned him into a British white woman. Either way, in the movie the boss baddie said she was a part of the Taskmaster program, which could mean the og is teaching them?