I have been part of the VatSim community for several years now and totally agree with you.
Everything is top notch professional. Of course there are times when the volunteer ATC controller has to go off line and get back to real life but all in all the VatSim experience is very rewarding, educational and loads of fun. In my opinion, Vatsim is a really good system that adds super realism to a product called MSFS… After all, it is called a simulator.