I've just read a post from my ex-coiffeuse and friend. She posted a set of cartoons going the rounds in France. The ordinary French (I assume she and her wide acquaintance and family count as ordinary) are fed-up to the back teeth with immigrants, the trouble they cause AND the amount of money they get from the French state. The farmers are simmering sullenly and are about to explode (that was the basic theme of the cartoons) as grants to immigrants exceed the average agricultural wage.
Now, someone may be able to take this to pieces, I'm reporting what I've read and been told by French friends. Point is, that it's not just this side of the Channel.
I would support a huge effort to divert all ferries to Dunquerque and another port to push the French government to an effort to save a chunk of their economy. The problem is that the right to strike is so ingrained that it is impossible for the French to even think of curbing it - no matter how much it inconveniences them.