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…
I think one thing that struck me from the linked article was the point that the memo wasn't structured to invite discussion. It wasn't "let's have a chat", it was "here's an evidence bomb of how you're all wrong". I think advancing points is fine, but if you're after productive discussion rather than an adversarial debate, you need to proactively invite discussion. And if an adversarial debate was what he was after,…
You put it more concisely than I have previously.