As a recent emigrant myself, but U.K. born and bred, I’m sure some would tell me to go fuck myself on this but if I were still in England or to return, there’s no way I’d rent or buy in an area festooned with St. George crosses. I suspect they will put a lot of people off. Perhaps it will mollify the rage at immigrants causing a housing shortage although I’m not clear on whether they are blamed for putting house prices up or lowering them? Probably both.
I don’t think most nations are mad on having their national flag flying except on public buildings and on sporting occasions. America is an obvious exception, probably because it’s independence was hard won and there is a lot of history and culture embedded in the flag.
In Spain and Portugal you occasionally see them, very rare though outside of sporting contexts and not generally in windows but on the odd flagpole and they are often alongside other flags, I think having endured nationalist dictatorships within living memory probably helps. I don’t recall seeing the French do this much even though the tricol is on every public building. Ditto Germany although they were mad for the swastika during the Third Reich …
The US aside, enthusiastic national flag flying usually has xenophobic connotations unless you are in an autonomous region with a chequered history with the attached country when it is more about asserting cultural independence from their historically overbearing neighbour like Wales or Catalonia. So the whole “You can’t even fly the flag these days…” -is so disingenuous.
I don’t think a decent person who had concerns about the impact of scale of immigration would back all this flag flying shit because they’d blame the system and not the individual and would think how horrible it must feel to be an immigrant living amongst it all.