He is just stupid.
In the 1950's building standards were practically non-existent and planning permission was not even required. T.D.'s etc could not object for votes.
Houses were of a low build quality.
We also did not have the huge social welfare, health and education budgets at the time.
We have huge shortages in trades and engineers etc never mind slow moving and wasteful state and semi-state agencies like Irish Water, Bus Eireann, ESB, NRA etc not even providing the utilities, sewage services, transport or roads etc. Public servants sitting on their arses all day on the INTERNET.
I have no idea who Moan O'Broin expects to build all these new homes but then neither does he.