I know the old farmer guys and locals called servus for either hello and also goodbye. Also they used egal for "it is the same". But the actual usage...
My point of view is that the vast majority of Mexicans, Colombians, Persians, Moroccans, etc. do not pass directly into Spain, only 10-20% will pass...
It will happen the same with the covid vaccines, the side effects are being exposed and then in a few years, under popular pressure, some politicians...
Maybe not with the NE French but with the NW French it is a different story surely (excluding Brittany)? The English wouldn’t look indistinguishable...