Lol, lets be real, if it wasn't for other people playing on and migrating to it because of money reasons, english league and the whole squad would be completely useless and their best result would still be the 66 one, probably for eternity.
England would be a better wales, but not by that much, and would be obliterated by france, who welcome people from different origins in the NT.
The idea of a 100% british is a joke, everyone came from a different place somewhere in time, you say you can accept a frenchie that imigrated there some years ago but not an african who came 1 or 2 generations ago? How do you even define assimilation? These players are literally the reason why the english NT is there at first place, you have to accept it, because if not, you would be just denying the reality.
In south america I am pretty sure that no one questions the country that neymar antecessors came from, he was born and raised here, just like the english lads, that is what matters the most. And colonizers countries have this opportunity that could be considered unfair and they still seethe at the results, that is just insane.
In today's match the second goal by portugal was by Pepe, a born and raised brazilian that choose portugal as his country. And there is also Hakimi who was born and raised on spain and played against them by choosing Morocco.
Neither made wrong choices, but both NT benefitted from it for sure.