Thank you for your question.
When you publish in the humanities and social sciences, it is often easier to disseminate your work in the majority language, English, than to do it in French. Obviously, it depends on the research subjects. When you are working on the francophonie, you can publish your work in French more easily. However, when you work in political science, sociology or anthropology, for example, you have a much broader choice of scientific journals, a large majority of which are in English.
The journals recognized as being in French often deal with humanities and social sciences in general or, even more often, with the francophonie. When you do research on that subject or on language in general, the number of French or bilingual scientific journals is obviously higher than when you do research on another subject.