I'm not a huge fan of Elvis as a person or even really an artist, but it's pretty wild to see people in this thread discounting the absolutely singular impact he had on the rock genre all because they can't get over their "white people bad!" circlejerk.
Also: The idea of "stealing" musical genres is braindead. If Elvis "stole" it, so did every white person who came after him, including your beloved Beatles and everyone they influenced, so hold them to same standard.
If we're going to dictate that only one race/culture can lay claim to a style of music, it has to apply all the way forking down.