Insofar as "socialist politics" make it harder for the supply of housing to rise to match demand, it is not moronic at all. Places in the UK where housing stock grows with population don't have it as bad as places that don't[0], i.e. London.
Thatcher left office in 1990. The population of Greater London has grown by 44% since then. I don't think there has been a single decade since where the growth of housing stock kept up with the growth of people. Why blame Thatcher for this?
Alongside Thatcher's 'Right to Buy' policy that reduced the stock of social housing, there were also restrictions on how much new housing could be bought or built by local councils to replenish the availability of social housing. These restrictions had more or less remained the same until very recently. It was only during the Johnson government that the restrictions started to be lifted. Of course, the current Labour government are attempting to once again build new social housing, but it is easy to see why people look back and see Thatcher as being the cause of those three decades of social housing shortages.
Thatcher left office in 1990. The population of Greater London has grown by 44% since then. I don't think there has been a single decade since where the growth of housing stock kept up with the growth of people. Why blame Thatcher for this?
[0]: https://ifs.org.uk/articles/england-has-poor-record-building...