Anything else is noise, they violated the license. They blatantly copied copyrighted works. They can't "oopsie" that away or claim it as a mistake, honest or not. You simply are not allowed to do that.
Suggesting that they "could possible just copy the licence somewhere less visible and remove the link from their README." is wrong. They MUST include the copyright notice and the rest of the license. They don't get to choose whether or not to respect the license. And they don't need to remove the link, That's got nothing to do with the copyright issues. No one at Microsoft thought that call out was somehow the legally required attribution clearly explained in the MIT license.