Have you ever worked in academia? This kind of email could definitely be real, not saying this one necessarily is though
I have never worked in academia, but I’ve spent time around academics and have read plenty of emails in both academic and corporate contexts … this particular one looks fake, even if the circumstances of plagiarism are common - this just not seem like how a thesis adviser would address this kind of plagiarism with a grad student
The way I read is that they forgot to cite sources, so technically it’s plagiarism. I didn’t take it as a bad faith effort of passing off someone else’s work as their own. Otherwise I would agree, I don’t think they’d treat the situation so flippantly.
It’s not “flippantly” - the reviewer’s opinion is there, and the whole message is just a “get your shit together”, but in a more polite and ironical form. It’s not an official or final review yet, but if I would receive it, I’d get the idea of what happens when the paper is officialy submitted.