For sure, Trainz has evolved into what it is today, but its raison d'etre, was Railway Modelling. I think you will also find that a large part of the evolution process also had to do with the Trainz Community and not entirely to the credit of the developers! The original "Brew Crew", to their eternal credit, built up a very loyal, dedicated and helpful band of enthusiasts through this very forum who contributed greatly to creating models with new features. TS12 is a far cry from the first "Trainz" which, to be fair, was streets ahead of the early simulators and entirely different from MSTS.
I have also seen how some members of the UKTS community behave, as well as some members of this Forum behave. It is for this very reason that Vernon Moorhouse (vern) seldom posts on either forum any more, as well as a few other talented modellers and route builders. For myself, I still retain a foot in both camps as I find Trainz and Rail Simulator both have a purpose in my life. If it wasn't for my commitment to ATI Graphics, I would probably still be using MSTS too because some very interesting UK models have recently made an appearance over there. With MSTSBin, better graphics are supported as well as cab swapping features which instantly made Trainz a better option when it came along.
As far as I can see, there is no need for any particular community to disrespect each other. In the quest for continuous improvement, the sharing of the knowledge pool and mutual cooperation between users of Mechanik EN57, Boso View Express, MSTS, MSTSBin, Railworks, Trainz etc will benefit us all in the long run. If there is one message to be rammed home this Christmas time, it is to be on good terms with all people.
All the best!