There was a season not that long ago that Cazorla has something like 9 league goals and 8 penalties so it's not impossible.
Alexis chased the ball all over the place and Giroud never outpaced anyone in the box in a way he could get in front and be brought down. In fact Giroud rarely takes more than one touch in the box so there's not a great opportunity to take him out. He also likes to come a little deep and play flicks with his back to goal.
It seems reasonable to expect our penalty numbers will go up with someone like this in the side. I'm no expert on Lyon but there's a certain amount of skill involved in creating a situation where you're forcing the defender to take the chance on fouling you. If they really win so many penalties I'd assume he was playing a role in winning some of them.
Still, this sounds like textbook logic, reality is never the same