...I mean it's becoming a norm thing in the society these days so they might think it doesn't matter here. There's no more morals in the society, people easily steal people works without giving credit to and they go unpunished.
It's very disheartening how it happens. That is why I'm most times surprised when people say they don't know that plagiarism is an offence. I'll begin to wonder if there has been a time plagiarism wasn't an offence.