I don't understand that at all. I happily climb bolted routes in the 20-25 bracket but wouldn't ever consider driving all over the Grampians to seek them out.
I love the freedom of showing up to a crag with a rack of gear and leading (or top-roping) anything that appeals. Clipping bolts is good fun too but somebody has to put in a lot of time and money to place them and in a National Park you can't just bolt every line.
I don't think people should be ashamed to top-rope routes (where it is possible) if they don't have the hardware or the experience to lead them.