Of course Romanians are immune to a greater frequency of being told "f*** off back home". Because we all know that hostility to foreigners hasn't incresed post Brexit.
By and large, it hasn't, except for peaks around Charlie Hebdo, the Brexit vote, Westminster & London Bridge, and Manchester attacks. The balance of the 'increase' in hate crime
"are likely to be driven by improvements in crime recording by the police and by the police improving their identification of which offences are hate crime related." (Source gov.uk Hate Crime in England & Wales 2016/17). To which should be added greater ease, and anonymity, of reporting by alleged victims, and the fact that 'hate crime' is self-identified, that it has to be recorded by the police whether or not there is any proof or evidence, and that recording anything but an increase is officially considered to show the relevant police force as failing in respect of hate crime.
This country is amongst the most tolerant of immigrants in Europe.
https://en.wikipedia.org/wiki/Occam's_razor
"Occam's razor is the problem-solving principle that, when presented with competing hypothetical answers to a problem, one should select the answer that makes the fewest assumptions."
Brexit has crashed Sterling and made Britain much more openly hostile to immigrants, especially in the longer term.
Glib response, and meaningless in the context. As I pointed out, Sterling is no lower than it was 6 or 7 years ago, when there was plenty of immigrant and seasonal labour available, and when it wasn't unknown for farmers and/or gangmasters (usually of the same nationality as the workers) to house them in dirty and unheated intensive chicken houses. The facts are that it is now more attractive for the seasonal workers to work closer to home, where the economies are in a far better state than they were a few years ago and wages are becoming competitive.
As regards 'openly hostile', I very much doubt that your average Romanian seasonal picker has heard of Windrush, or of vans demanding that illegal immigrants return home, or would care if they had. It is completely irrelevant to them. EU seasonal workers enjoy an absolute right to come here and work, and hopefully will continue to do so.