Remains unlikely for now, because unlike in Scotland and Catalonia the number of Flemish that would actually vote for independence right now doesn't even come close to approaching 50%. N-VA+VB doesn't quite cut it, because a lot of N-VA voters would be wary of the consequences of immediate independence.
The gradual disintegration of the Belgian state, however, isn't all that unlikely. Confederalism probably will happen, sooner or later.
Are the Belgian youth more invested in seperatism/confederalism than their elders?
The youth mostly seem a lot more polarized (VB and Groen are both very popular among the youth). I don't get the impression that there's a significant difference when it comes to levels of support of Flemish nationalism compared to other age groups, but our Belgian posters will probably know more about this subject.