clear coat

Hi, I just bought a used 2010 Mazda 3 S a few weeks ago.:clap: First post here, though I've been lurking a lot looking at mods. The previous owner had acquired a few rock chips (from driving on the highway frequently, I'm guessing). A couple of them are rusted as you can see in the pictures...

Could not find a dedicated thread/area for wash/wax/detail questions, so posting it here.. I have heard a lot about 'thin' paint and 'soft' clearcoats on Mazda3s and rust problems in general with this brand (on autopia, autogeek etc). I recently purchased a white HB and was wondering what the...