I worked with a "John", with the added bonus that I was expected to be the hatchet man telling developers that they couldn't use any language features introduced post Java 5 or that they had to restructure all of their solutions in line with the latest edict. Thankfully we had some very good teams who saw exactly what was happening, and were able to schedule a round table so we could talk about how this was both demoralising and causing things to go extremely slowly. (At one point "complying with edicts" was taking up 80-90% of engineering effort).

The net result of the big round table with every senior dev in attendance was "John" spent an hour trying to deflect us from the topic at hand, 30 minutes pretending to listen to us, then within two days it was back to, "I want you to tell the teams to go back and rename all the DTO objects they've created".

In the end I just left. There's no point fighting that kind of environment. Someone hires "John" and is happy with what they do.