Religion wasn't the glue, it was an aspect. The main reasons of the revolution were political (in this case representation) and economical.
You forget to mention that Wallonian was also a language for the poor. But that is a side note.
As for the Flemish movement, there is no need for you to teach me the history of Belgium, for I know it better then many, it wasn't about 'Flemish Identity'. There was Belgian identity and that's it, the problem as you say was language, Belgians who speak Dutch are as good as Belgians who speak French, the Flemish movement at the start was a Belgian nationalistic movement, that named itself Flemish, because of the 'Leeuw van Vlaanderen' which was written to create a strong Belgian nationalism and that needed symbold, 'LvV' aimed at doing that.
It isn't only on paper the Flemish capital, it's a reality, the Flemish government is settled there. By the way, historically Brussels is a Brabantine city. Bruges in it's glory days was the greatest of all Flemish cities.
Flemish independence would solve nothing: there would be a complete deadlock for years, they would argue and argue about who get's what.
The most annoying thing is that there is a solution, if they would all set there shoulders under a well brainstormed complete new state-structure based on other federal states, like Switzerland (even if they call themselves a confederation), the US or even Russia it would bloody well solve this pathetic deadlock, without having to ruin us all.
Antwerp? They can't even decide on building a bridge or tunnel when they need to solve traffic jams in order to keep their little port in the running. What makes you think setting a whole government apparatus up will go easier? By the way, no-one but those form Antwerp will be happy with that, they will argue about what city to take for at least 6 months. There's actually NOTHING that goes better if it's done by Flanders instead of the federal level.
It still has, I'm talking here about small enterprises. SMALL ones. The borders are still there, they have an easy almost monopoly on Wallonia, even if there's a united market or not. Besides if Flanders breaks of Belgium it fall out of the EU, it will have to make whole new arrangements, with the EU and Wallonia, in the meanwhile French and German companies will have settled there, whoops away with all those little Flemish companies.
Belgians commonly feel Belgian and either Flemish Wallonian or Bruxellois. This means that the moderate Belgian will vote any party that does not want to throw Belgium away, like CD&V, Groen/Ecolo, PS, sp.a...
And there aare Belgian federal parties: BUB, BEB-n, PVDA/PTB, UNIE, LSP/PSL, KPB/PC, CAP...
The main problem is that the Belgian nationalistic parties lack a proper leadership, and are disunited among themselves.
And not to forget: SHAME.

So Bart, this is my point of view it is on some points radically different from yours, but I will advise you to do more research on something before posting something about it. Because in this conversation I am better informed then you are, this deletes your creditability.
If this had been against Bart de Wever he would have overruled me as I could overrule you.