The main thing I see today is the immigration argument is no longer about immigration, it is about culture. With Brexit it was supposedly about numbers but it was actually about cultural xenophobia. It was about sticking one to Europe and getting rid of the 10 poles next door and that kind of thing. The reality is we shut the door to hundreds of thousands of people who work here, start families and generally contribute and we're not better off for it.
The same rhetoric is happening now. You never hear the right say oh immigration numbers are coming down so I'm a little bit happier. They're actually now saying hey I see more Muslims on my street so what are you going to do about it? It is a cultural argument that just so happens to involve immigration. They have no problem whatsoever with helping out millions of white Ukrainians
Denmark are strong on immigration but they're quite clearly not asking to eliminate Muslim communities which is basically what the Tommy Robinson brigade want. They want an authoritarian regime which will hound out anybody who doesn't look like them... We fought this kind of thing back in 1939!
Your post just proves my point, you have a very narrow view. I think we can put racists/Tommy Robinsons crew in the no shit sherlock box.
So let's deal with the rest of your post
Immigration has always been about numbers and culture, the culture part is not new. Some people for example would like the whole country to be Atheist because they think religion is not only illogical but dangerous. There is a difference between preference and prejudice.
The little bit happier part has been covered, if someone wasnt happy at 200,000 then it went to 800,000 then back to 200,000 why would they be happy? they might be relieved its not quite as barmy, how do you know they aint? You been wandering around asking strangers?
We were not happy with the poles(erm not brown or muslim generally, whoops thought it was brown folk) but are with Ukrainians. So do we like white eastern Europeans or not? Thats one of the funnier ones I must admit.
Maybe just maybe people saw the Russians invading.the country and against your view these racists and facists maybe aint that at all, they will accept people in certain circumstances.
Denmark are strong on immigration, they aint a far right country thus dispelling the easy lazy argument - dont like mass immigration must be right wing or fascist or racist or xenophobic or all of them.
Not everyone belongs in the box you wish to put them in, you may not agree with people based on your view that forever growth is a good thing and that's fine but you are doing precisely what racists do. Pick a large group of people and demean them.
You even threw in 1939 but at least managed to avoid Hitler I suppose.