https://archive.ph/hlMcz"accused of"
"they involved only a few paragraphs of a 330-page thesis."
Systems like Turn-it-in gives you a % plagiarism score and it is usually >0 as it includes your citation text etc. and any direct quotes. So for a 330 page thesis a few sentences will not really make a difference. Your assessors wil let it slide as, on balance, it's not a sufficient problem compared to your original work.
So this looks like a hit job to turn the Gay incident into "see, everyone does it" so they can bring her back later when everyone has moved to the next thing.
We all know it is nothing to do with plagiarism but upsetting certain people.