Not really...
Look at it from the Belgians point of view.
4/5ths of the country is over-run, the army is exhausted after 18 days of constant fighting, out of ammunition, disorganized, and taking huge losses.
The defense plans of the Belgians fell apart when the vaunted “Impregnable” Fort system was captured on Day one.
What’s left to die for?
They were responsible for protecting the flank of the BEF. Leopold left the allies who tried to stave off the Nazi invasion high and dry. His father refused to surrender and fought on despite almost the whole country being overrun by the Kaiser’s armies except for the area around Ypres.
While I tend to agree that from a military standpoint, Belgian resistance was pretty much at an end by this time, it still doesn’t excuse Leopold III from being pretty much worthless as a king.
The Germans knew how to hit a weak spot and they were hammering the Belgians relentlessly. The Belgian Army was not nearly as well equipped as their French and British counterparts. Plus, as noted in the excerpts I posted from Shirer’s “Collapse of the Third Republic” yesterday, the French, British and Belgians were all acting at cross purposes in the conduct of operations anyway. The Brits were bugging out, and the French knew they had the second ticket out. Both of them were counting on the Belgians to shed blood to make good their escape, abandoning Belgium to it’s fate. All while not telling their Belgian comrades in arms what they were up to. But the Belgians did figure it out.
The war was over for Belgium and it was obvious. There was no longer any reason for the Belgians to fight as there was nothing left of their country to fight for. Even in WW1, when only a tiny sliver of Belgium was not occupied, their army was part of a unified allied front. In 1940, they only hold part of an encircled pocket that is going to be eliminated.
The main problem is that Leopold quit in violation of his constitution, was duplicitous with his allies, and generally a worthless leader. And keep in mind that Leopold helped cook up this mess to begin with. Despite obvious signs that Belgium would once again be a battleground in this war he failed to prepare for it. Despite repeated entreaties by the French and British to collaborate in staff talks and strategic coordination, Leopold insisted in clinging to the fiction of neutrality and didn’t coordinate with his allies.