We humans all blend into the one bland culture

Which is precisely what you are proposing for England.

A multicultural world including nations with a multiple number of cultures trying to live peacefully under the one state law, or having different laws for different cultures withing the one nation

We're doing just fine, Wavy. Once again you're confusing the facts and looking for trouble where there is none - although there is is, of course, the Motor-Cycle Crash Helmets (Religious Exemption) Act 1976, Section 2A which exempts any follower of the Sikh religion while he is wearing a turban from having to wear a crash helmet.

By the way, Wavy, you've yet to explain how English culture is taking a hammering, or yet how people are suffering as a result.

As is my myspace header "a multicultural WORLD" with eco-travel and fair-trade between nations, via a stronger more-democratic UN - rather than yet more conquest and ecnonomic/capitalist immigration/emigration (which has NOT solved the rotten inequality in our world).

In other words, a Forth Reich Totalitarian Militarist World Order which enforces Ethnic Cleansing and Cultural Purity resulting in the Deaths of Billions.

Otherwise...

as the transverse flute has also been known as the German flute for centuries, so too the recorder as the English flute; and, although we very rarely see them in orchestras, apparently classical musicians still tend to use the latter name

The recorder was not known as the English flute for centuries, rather it was but one of the names used for it for a brief period in the early 18th century - see above (somewhere). Is it really true that classical musicians call recorders English Flutes? First I've heard of it and I've worked with a fair few classically trained virtuoso recorder players in my time. Google English Flute and see what you come up with; you'll discover the recorder was called the English flute simply to distinguish it from the German Flute, not because of a particular association with England. You've been told this a million times but, as ever, your way is the correct one! Like that other Wavyism Capitalist Immigration, the term English Flute exists mostly in your imagination. But this is the Wavy approach to culture - if the facts don't fit your racist agenda of an ethnically cleansed and culturally pure England, then make it up until they do!