All that has been said is that wealthy people, however they come by their wealth, should pay their taxes properly in the country where their wealth is earned so we can have a properly funded and properly resourced NHS.
Doesn't seem much to ask for, does it?
However, we do need a properly funded tax system to see this happens.
One of the letters to Tony Benn's grandchildren was about old people retaining their idealism despite the experiences they have had, and finding that their experiences justify their idealism, and encourage dreams for a better more equal society.
I much prefer Tony Benn's thoughts than the alternative.