I'd recommend closely inspecting ANY air filter at every oil-change service - That's 10k miles in my case.
That is massively anal! So the standard paper air filter is good for 60k miles (or every SIX services if you are on T&D), yet you know better than the vast might of Volkswagens R&D and testing facilities?
....Surely there's no harm in my suggestion to inspect and I fail to see how this states that I know better than the Teutonic hordes of Volkswagen's experts - Clearly I don't and wouldn't claim to. However, in the case of a modified GTI which may be pulling in more air and debris because the oem ram intake has been replaced, I see absolutely no harm in being 'anally' over cautious.
I'm inclined in both the interests of safety and a strong desire to maintain my precious car, to inspect all I can regardless of VW's normal servicing regime. I think I would deserve your derogatory comment more had I been recommending inspection
less frequently than VW's handbook.