Many of the more reasonable criticisms of the memo say that it wasn't written well enough; it could've been more considerate, it should have used better language, or better presentation. In this particular link, Scott Alexander is used as an example of better writing, and he certainly is one of the best and most persuasive modern writers I've found. However, I can not imagine ever matching his talent and output, even…
And perhaps it shouldn't! It might, however, limit their ability to write at length about sensitive, culturally-deep issues at work without getting fired and having their career stained.
Similarly, perhaps one's ability to write code shouldn't disbar them from a hackathon, but if they write a bunch of hacky code for a quadcopter and it flies into the audience, well, then they're in a bit of a pickle indeed.