@Hiob I think you missed OP's point. It's not whether you get good in a sim or not - it's about the simulated flight model. Anyone can get used to the specifics of a simulation, which, if the simulation is not accurate, will never translate into a useful real world application of skills. It's also not about bashing the developers, it's simply a matter of constructive criticism coming from people with real life experience in aviation, who can actually judge whether the sim is authentic or not.
Since I don't know if you have any real life experience in professional rotary aviation, I will not judge your statement - I myself have no such background, hence I'm thankful for anyone who has and is willing to get DCS as close as possible to the real deal.
Cheers
Maxl