While I will not argue your point, if the French leadership had moved faster and proactively 4 weeks earlier, Dunkirk may not have ever happened or been necessary.
Part of the problem the French had is that they did move.
Vehicles broke down moving into Belgium and there was no way to haul them off to be repaired far behind the lines. Their divisions had little ability to repair them themselves, and often their quirky design made field repairs difficult.
Germans recovered French vehicles by the 1000's and used them well into 42'
French troops often fought fanatically but they had lousy equipment and worse logistics.