The only controller to date in whose info that I’ve seen the “service limited by accurate radar coverage simulation” statement isn’t doing this. If people are copying that without knowing what it means then it’s been misconstrued on both the controller and pilot ends of things.

I’m a firm believer in NOT advertising what Radar client you’re using or any descriptors to that effect. If someone requests a radar service that we can’t provide due to lack of radar coverage, I just respond with “unable due to radar coverage” and offer alternative options. Usually it’s requests for radar vectors to approaches for which we don’t have a centerline depicted or VFR flight following in areas where the radar might not pick up an aircraft below 5500-6000. We field these sorts of requests in the real world™ every day. No reason why they can’t be handled just as succinctly on the network.

Dhruv is spot on. No where does "service limited by accurate radar coverage simulation" say that the controller will not talk to a pilot unless they are at a major airport.  VATSIM pilots often forget that, although some radar clients let you cheat (yes Im lazy and use VRC), controllers that use realistic modes will have to deal with real world problems often times. 
I've had to put in my comments something to the effect of "I operate in realistic mode, I cant automatically find you" because pilots forget that by only calling me with their altitude doesnt give me their position.  Then pilots get angry that I cant find them.  Normally I am all for learning and flexibility on the network, but this is one of those times where pilots on VATSIM dont understand or get it and a controller having that comment should help pilots understand that.  We shouldnt stifle controllers approach to realism in this case due to pilots lack of understanding.  In this case I think the controller is proactively letting pilots know ahead of time that the controller operates realistically and pilots can expect limited services in certain areas.  Good on the controller.
In VATREAL radar coverage has limits.  I cant tell you the number of times in VATREAL I've had controllers tell me "radar contact lost" because I am flying around mountains.  You cant vector someone without radar.  Yes there are still services, but not those.  Its like trying to give a VFR pilot a vector below the MVA......you just cant do that.

Thank you all, I look forward to drinking training with all of you and learning.