Be aware that this post has known issues that the author is not interested in fixing. In their own words (in response to clarifications by one of the OMEMO folk):

"I'll make an edit later about the protocol version thing, but I'm not interested in having questions answered. My entire horse in this race is for evangelists to f** off and leave me alone. That's it. That's all I want." [censorship of profanity mine]

You won't find this quote in the article with Ctrl+F, it's in the screenshot, where they omitted the original constructive comment by one of the OMEMO contributors that they chose to moderate, which you can find here: https://www.moparisthebest.com/tim-henkes-omemo-response.txt

So, by all means, read the blog post. But just be aware that its ultimate goal was not to be an unbiased accurate technical article.