> England has twice the population density of Japan, but Tokyo somehow manages to have affordable housing.

The UK has a lower population density, and Britain (roughly the same size) a much lower density than Honshu - and England is about the same as Honshu.

> land hoarded by the feudal aristocracy (parasites descended from thugs), who do not pay property taxes because there are effectively none

Also other rich people.

> Most people in the UK do not own the land under their lodging due to the feudal practice of leasehold

Not most. its 19% of dwellings, and as they tend to be smaller households a smaller proportion of people live in them https://www.gov.uk/government/statistics/leasehold-dwellings...

> NIMBYs, generally older and Tory

Mostly Tory? The affluent mostly vote Labour now.