Indeed. The author just wrote yelling. Given the Russian culture I suspect he was yelling in chats about the situation, not blaming a particular person or team. Something like “Why the hell have we stuck?” perhaps even with f-words. Boss expressing himself in such way is rather common in Russia. If such yelling is followed by reasonable suggestions, it is not even perceived as offensive, but as the way to emphasize the gravity of the situation.
Sure, re-reading it I do pick up that the author was perhaps attempting humour and self-criticism throughout. But there's still boatloads of red flags starting with the interview process (toss them in a room and get them to write some code as the measurer of the value of the candidate) and ending with the whole concept of "re-interviewing" people.
It doesn't matter how humorous or humble the author might be, these alone worry me. Y'know, me, that arrogant guy who likes grapes.
In any case it's clear the original author does not live in a tech job market anything like North America, where a request to "re-interview" someone would be met with a confused stare followed by a middle finger.