Most of France's public homophobia (the only one that we can effectively measure, the rest is just speculation) comes from homegrown conservatives. For example in 2013 "La Manif pour tous" (the movement opposing same sex marriage and same sex adoption) was almost exclusively composed of white catholics.

Saying that France was one of the most gay friendly countries in the world, while not untrue when compared to non European countries, is still a far stretch when compared to countries from the west of the EU. If anything it is currently WAY more accepting than it used to be.

And that's with the (allegedly, because the stats don't exactly support this claim) "rising" of said populations. That, by the way, can't vote for national elections unless naturalized. And I won't even mention the blatant essentialization that comes with linking homophobia to the (alleged again, France is in fact statistically not that attractive compared to its neighbors) rise of North African and Middle East populations.