I dont normally chime in on these posts but I will this time.
I have been part of VATSIM for almost 2 years and have gained over 1400 hours as a controller. I don't have this many hours because it's a hobby, but is just something entertaining.
I can see the whole realsim arguement while also see the whole "video game" arguement. Like in most things, there is a middle. There are some realism things that are hard to emulate, such as runway/taxiway closures, weather, navigation data. And there are things that are hard to impliment in a video game, like no phraesology, lack of ratings, and such.
I get why people strive for realism, but what do you do if a pilot doesn't want to run real world weather? In that case, why do you close taxyways and runways for that matter? Is it because there are construction crews in the sim? If so that is an addon I never heard of. Navigation data is not a requirement, but recomendation on VATSIM. VATSIM is free and only requires a client and a simulator. That's it.
I do believe there should be a standard as a controller. I believe phraesology should be about 75 to 80 percent correct generally. There are some people who want to work just events or no events at all, which is why I believe very high training standards are not a great idea. It should take a year to get a C1, in my opinion.
Anyways, thats just my 2 and a half cents.