The initial posting was structured to very much ignite a flame war, already from the title ("programming la-la land").
It was arrongant, condescending, and, as far as it's content is concerned, shallow.
Basically merely a few quick remarks that were supposed to take down a proper study (of which the "critic" misunderstood the scope, reasoning, and who it concerns).
As for the existence of "opportunistic coders" (a concept which he also misunderstood), he wasn't told to "just shut up about them", but to understand that whatever the fuck his objections are, they are a real group, they are valuable, and an organization operating in real life needs to also catter for them.
If that is indeed true, you will notice from the replies to his message that he definitely did not succeed. However, I prefer to interpret it at face value. He does say "Frankly, I've turned here for a bit of comfort. If anyone likes completely initialising things rather than smacking one field at a time, surely I will find such people here.". To me it is just venting amongst friends.