I think at least in Germany it's not true - among people coming to Germany there are more refugees of various kinds than professionals

They definitely aren't, but whomever they are they still requires houses, power and water.

France is mostly empty by Europe's population density standard though, so even though it was likely not the intent of GP, it kind of works in that context.

Can you back up your claims? I don't have a dog in this fight, but do notice people ridiculing migrants as "doctors and engineers".

citation needed

That’s to the US. I believe in Europe it’s Arab hoipolloi