I come from the same town as the guys from Angine de Poitrine. In fact, they're friends with someone in my family who works in the music industry.I know who they are but I don't know them personnaly. They're good guys who genuinely love music and, by the way, are very talented musicians.
They used to create this kind of music and perform—or at least try to perform—their compositions live. I have to say that the audience response was pretty weak, both where they come from and elsewhere.
At one point, they came up with the idea of performing in these costumes that, honestly, don't mean anything at all. It felt like they were saying, "Let's make a joke out of this." Well, that was the start of the trend. Now, even in their hometown, it's fashionable to say that you like their music, and if you say otherwise, people rush to defend them.
Personally, I don't like their music, but I'm genuinely happy for them that they've gained visibility and gone from playing in front of 25 people in an underground bar to performing on stages in front of thousands.
Don't forget that even they know it—the costumes!!!
I hope for their sake that the trend continues for a long time, although I have my doubts