Even Shirou tells him to get on with it and stop trolling. That says something.
Also, I think the whole Gil vs. Sakura (which come on, he's pelting weapons at someone half asleep, is that even a fight).. I mean, this is Sakura's route, and she got torn apart worse than Shirou does in a good deal of bad ends.
I think Gil proved his manliness or whatever with dousing her with enough weapons that it kills most servants, and then playing golf with her head with a hammer.
Think about us Sakura fans, that isn't even a bad end, that is just the flow of things. But maybe people will feel better in that you'll actually see it, and it's not just a CG, they got sufficient cringe from Shirou's intestines flying about, even if fans have seen him get stomped by Berserker like a million times.
I think maybe if they see the sinew tearing from her limbs and guts rolling on the floor with her head rolling down the alleyway (whoo boy, this is the downside of getting a movie), they'll think, "welp, at least Gilly-poo got a shot in".