Quote:
Of course they are philatelic. They pay a fee for a government service, just as postage stamps do.

The government charges myriad fees for myriad services it provides. We don't usually consider all of those fees associated with philately.
The Oxford English Dictionary defines philately as:
"The pursuit of collecting, arranging, and studying the stamped envelopes or covers, adhesive labels or 'postage-stamps', postcards, and other devices employed in different countries and at different times, in effecting the prepayment of letters or packets sent by post; stamp-collecting."