If they take part in the purchase of "social housing" then they go against the ethics of socialism, and they are certainly not "thoughtful" or "caring".   The housing market is a capitalist con and every social house sold into the private sector reduces the chance of people in real need from acquiring homes.

The right to buy scheme was a capitalist masterstroke, showing would- be socialists in their true colours.
We need to understand that we cannot have it both ways, real socialism will be hard and we should not be able to buy our way out.
This society is unready for such a system, though its introduction will be inevitable...There is a huge difference between the "want it all liberalism" which afflicts us today and a real socialist economic and social system.