I'm guessing its because of technology rather than the subject. They were famous for films they created from 1895+ https://en.wikipedia.org/wiki/Auguste_and_Lou

I'm guessing its because of technology rather than the subject. They were famous for films they created from 1895+ https://en.wikipedia.org/wiki/Auguste_and_Louis_Lumi%C3%A8re https://en.wikipedia.org/wiki/Auguste_and_Louis_Lumi%C3%A8re