The nature of this hobby is that there are only few controllers and few pilots spread out over a simulates world. Which usually results in major hubs being staffed with controllers, which are usually served by airlines, or in the case of our hobby, by virtual airlines. Which of course is all IFR ops.
In real life, smaller airports and less busy airports tend to be VFR only, and controllers are assigned according to their abilities. Again, in VATSIM, IVAO etc. smaller airports are rarely staffed because few virtual pilots would use them and airliners would not fly there (because many fly for virtual airlines on designated routes).
That all said, it is perfectly fine to fly light aircraft at major hubs in VATSIM, even though that would not be possible in real life.
True, most VATSIM controllers are not used to VFR GA traffic, but in the end I found it’s all a matter of communication.
That said, VATSIM controllers usually instruct “proceed as planned”, so the experience is usually not as dense / intense as in real life, especially in high density airspaces such as Europe.
If we all assume that VATSIM simulates traffic right after the first covid lockdowns, it’s probably quite realistic