If the facts are useless to you, I would have to say moving on would be in YOUR best interest.
This isn't in the name of "debate." "Debate" would suggest at least 2 solutions to the same problem. Whether or not there will be fixed wing aircraft is not debatable, as the fact is there WILL be.
Releasing code for modders is a big decision for a company, and I don't think Eagle Dynamics will be doing it anywhere in the next 5 years if ever. DCS is about a certain standard. Releasing tools so 30 cockpits can be made with the exact same functionality of the KA-50 for an F/A-18 etc. doesn't make sense in the DCS world. It also doesn't make sense to involve diplomacy in software descending from government use.
I think Eagle Dynamics has made it clear that their #1 focus is on high-fidelity avionics, mechanics, and flight model. ALL other components are secondary.
What is meant by "build your own sim" is that Eagle Dynamics is a company. A company that reserves the right to create and design products according to their vision. Much like a musician who does not allow his work to go public for not wanting his vision spoiled or altered in any way. It is their property and it is their right to create any type of product they want.
As a consumer, you reserve the right to purchase or not purchase their product, as well as show your disapproval, etc. (which you have done here.)
However, I'll re-iterate, the best thing for YOU would be to move on if your primary objective is to have complex mission triggers, dynamic weather, and multi-tiered diplomatic campaign architecture. This is NOT DCS's primary objective, so your goals and the developer's do not match in this accord.