...one of the company’s billboard advertisments in New Zealand featured Hitler saluting with a pizza in his hand.

Minus points for lack of creativity. If they were really clever, they would have had Mussolini holding the pie, with the caption "At least he got the pizzas delivered on time".

The Hitler thing sounds like the only actually offensive thing they've done. (I liked the "Kids are evil; feed them" slogan.)

So this is in New Zealand, rather than Australia? In my very uninformed impression, I would say that the level of irreverence is lower in New Zealand than in Australia.

There could be more informed people (ahem) that post on this site who could agree or disagree. . .

"Hey, kids, where should we have dinner tonight?"
"Let's go to Hell!"

Haaa.

And if you eat a deviled egg, you'll never get into heaven.