Someone had to say it because it is a female politician so we have to make it about sex. Oh I hope you are less of a twit when you are no longer a virgin.

I take this is a comment from someone without a doctorate from the US. I know nothing about other nations' practices, but in the US you would have been tossed out for plagiarism. Legacy kids are getting bounced from Harvard undergrad for cheating. Yes, professors can be oblivious and there are high profile cases. In the sciences your dissertation also requires publications in the process. This would require that no one notice plagiarism in peer review.