Unless you have another interpretation of the Hanlon's Razor, it seems that he is saying this is a mistake and not a backdoor.

> They shipped a backdoor.

Did they? Might be. I am 50/50 about it, people do dumb mistakes with self-rolled crypto all the time and that's a sad reality. But who knows, it might be the first try to embed a backdoor.

My point is: being too sure one way or the either makes you biased. I err on the side of incompetence but I am open to the possibility that it was a first sloppy attempt at backdooring Telegram. Sadly we have no proof of either, so we speculate based on what's available.