Actually there is very little gay content in the film and in my view it didn't feel overly long by even a second. I know what you mean about long films. I usually prefer 90 minutes or so but in case where your attention is fully engaged it doesn't matter if much longer.
I liked the opening male model scene (it conveyed a humorous and probably true theme about cheap fashion vs luxury consumer items) but I don’t think not liking it would necessarily translate to not liking the movie. It was hardly pornographic or even titillating so I find your negative reaction to it odd.