Some people do. Linguists on the whole don't, and it will be a long while before they do. Literature is still completely shared, and we can read each other's newspapers with zero problems.
It's good to distinguish between Flemish as the group of dialects spoken in roughly the provinces of East- and West-Flanders, and Flemish as the broad name for everything that's not quite the standard language in the larger region of Flanders, which is the Dutch-speaking half of Belgium and includes three more provinces. I'm not sure which of those two those people refer to.
It's good to distinguish between Flemish as the group of dialects spoken in roughly the provinces of East- and West-Flanders, and Flemish as the broad name for everything that's not quite the standard language in the larger region of Flanders, which is the Dutch-speaking half of Belgium and includes three more provinces. I'm not sure which of those two those people refer to.