This has been discussed so many times already, and it's a COMMON technique used by many other developers too, in order to get rid of the default airport ground vehicles, which are ugly and not optimized at all, so they lower the fps with not so much visual benefit, and might also clash with the airport apron details.
Of course, with GSX, the issue of naming is moot, since you can use GSX menu and select the "Warp me there" option to go on a gate.
Selecting a gate with the GSX menu is WAY easier to use than the default "Go To Airport" menu, because the default menu will list all gates at an airport in a single list with potentially hundreds of entries, while with GSX the list is shorter and more intuitive, because the gates will be presented grouped by terminal.
In addition to that, GSX will tell you exactly if your plane will fit in a parking, in a way more accurate way than the default Go To Airport menu, because GSX will compare the actual parking radius against your plane wingspan, while the default Go To Airport menu will only tell the parking type be either Small/Medium/Heavy.
And, on many of our airports, that come with a special GSX customization, they terminals and gates will be named using a more realistic naming conventions, instead of being limited by the limitations of the default names in the AFCAD. So, for example, you'll see the "Tom Bradley International Terminal" at KLAX named as such, instead of having just a generic name, which cannot suit every possible situation. Naming a parking as "Terminal 4 Gate A31" is NOT possible with the AFCAD, but it can be done with GSX.
That's why, by using the GSX menu to go to a gate (and the default "Go To Airport" menu ONLY to switch airport), there wouldn't be any issue finding a suitable parking just because they are all named as ramp_ga in the AFCAD.