Given just about all of the CBR pollies are frequent fliers and a large percentage would be plats from their travel then as a natural course they would come to the attention of any airline that they frequented and get various perks offered. We all seem to get upset becaue its a pollie getting a perk but not if the plat FF (incl AFFers) has a different career.
Yes closer scrutiny should be applied if the person in question is a direct decision maker in the respective party in airline policy or the head of the party or there is a lack of transparency but otherwise IMHO its just par for the course for FFers.
I noted commentary that the PM has made more than 6000 flights in the last decade, for any flier, that would get the airline cosying up, regardless of duty statement.
Edit: correction- as noted by
@sudoer its lifetime count.