[1]: https://en.wikipedia.org/wiki/List_of_countries_by_home_owne...
[1]: https://en.wikipedia.org/wiki/List_of_countries_by_home_owne...
If rent is dirt cheap, and tenant protections are large, most people prefer to pay little rent, and invest their money in stocks or some other asset, than put all of their money into a single asset with very questionable performance and high risk (a house).
You can have financial independent, fully passive income from stocks, and just pay a little bit of rent with it. Or you could have a house, be tied to a 60 year credit plan, and have to work until you are 70 years old.
Don't be disingenuous, the fact that home ownership is high indicates that the housing is cheap, and cheap housing dosen't require a "60 year" credit plan to obtain. Indeed, I would wager it is the countries with lower home ownership rates that require a large mortage and high debt to pay off.
First of all, compared to the rest of Europe houses are small - my parents have a house that's slightly larger than the average, it has 3 bedrooms in 90m2 including the garage. The housing stock - even new houses - are all pretty inefficient and need a lot of energy to heat. The rest of Europe has been pushing energy efficiency standards (in terms of heating demand), especially Scandanavia and the Baltic's, while the UK has pretty much stood still and builds houses today the same as they did 30 years ago.
For this you are going to be paying a lot. Two people on average salaries would not be able to get a mortgage for my parents' house, and it's not anywhere near London or other big cities. And that's assuming you could earn an average salary - in their area that would be a bit of a push as most of the jobs are in the service and tourism industry.
But you're right that any article describing UK housing as "affordable" needs suspicion. Should also compare by size; the one advantage the US does have is much larger houses, on average.
Most people are all in on housing and can't afford to diversify after that, thus, the government cannot let the market crash without wiping out the wealth of the majority of its citizens