All EU member states - including the UK when it was a member - seek to use the EU to further their national interest. Why should that be a surprise? The Belgium "attitude" is determined by their constitution. Major reforms such as trade deals require all 5 Belgian regions to agree to the proposal. Wrt the Canada - EU deal, 4 of the Belgian regional governments approved the deal but Wallonia did not and the Belgian federal government therefore could not sign off on the deal. It was not an attempt by the Belgium government to get higher subsidies as you suggest. The ideas that Belgium, Luxembourg and France are bullying their fellow EU member states and that Belgium are attempting to poison other members against the UK are, frankly, nonsense. Where is there any evidence to support these hypotheses? It is similarly nonsensical to suggest that these countries and the EU are extorting the UK. Again, where is there any evidence to support this proposition. Luxembourg has benefitted from some companies relocating their operations from London post-Brexit. Why shouldn't they? To state the blindingly obvious, Brexit was a self-inflicted wound. It would be naive to think that there is no 'dirty' money circulating in Luxembourg, but I doubt that the Luxembourgish could teach the shadier institutions in the City of London much about money laundering.
