From your medium article:
Ignotus Peverell, on Grin coin, has solved the main issues in the past that a lot of crypto coins wanted to do but could not achieve. These issues are; privacy, scalability and lightness .
Wait, wasn’t it the Tom Elvis Jedusor (i.e., Voldemort) who added privacy, scalability, and lightness, first, as he was the originator who described the mimblewimble?