Easy way to spot the non-enthusiast: Running on 17" Monza's, with no other visible mods!
That's utter horsesh*t. How can you make such a ridiculous generalisation? Could it be possible that some "enthusiasts" prefer to carry out "invisible" mods, e.g remap, intercooler, arb's etc. and leave the exterior pretty much or completely oem. Some people enjoy knowing their car runs and performs beautifully without having to draw attention with, for example, stupid atfermarket alloys; I'm not saying that all external mods are ugly, far from it. Some enhance the car beautifully.
I've seen plenty of gti's on (usually kerbed & whitewormed) 18's which are obviously not owned by enthusiasts. Also could it be possible that some gti's with external mods are owned by people who want their car to stand out, but don't look after their cars internals?