Whilst I accept a good number of the points made above, especially Ashy's comment ...
It worth pointing out that a good number of European Countries are awash with illegals - and nobody is doing a thing to prevent the explosion.
If you really need a feel for real-life Paris, and Europe's problems with immigration in general, I recommend BBC4 Spiral - a French Language Cops Drama, in its sixth series and everyone worth watching. It is truly scary to realise what is going on - because you see the same thing on Nordic Drama too.
Forking out £44 million, taking in 100 22 year-old Moroccans who claim they are 14 years old, is just good politics, soft-soap to Macron and the French, and anything to keep a border presence in Calais and prevent wholesale illegal immigration.