According to Wikipedia there are 540 million active accounts as of Oct 2013, the ghost town trope needs to die because it is simply incorrect.
I don't think it matters what people call it. If G+ works for you, who cares if people call it a ghost town? Your G+ certainly doesn't sound like one.
If we wanted to have a substantive discussion about how well G+ is doing, we'd need to know a lot of specifics about G+ (as well as define what 'well' means in this context). Can 540 million active accounts be a ghost town? Depends on what 'active' and 'ghost town' mean. If we're just going to throw around labels without definitions or data, people just end up supporting the idea that feels right in their gut.
Saying, "it's not a ghost town [for me]" is no more or less valuable than the opposite experience. I'm glad you're enjoying g+, but that fact doesn't say much about the service.