Somebody does something genuinely original, someone else steals it and passes it off has his won original idea, he is a scoundrel of the worst order.
But this isn't a game of igotcha and you have fallen into the trap of modern academia of trivializing the issue, which is mostly used to benefit those who actually don't have a lot useful to say.
Its not like we are asking for her to be a Vice President after being a plagiarist of major political speeches...whoops, that was Joe. But that’s okay, he’s a Dem.