It's a "safe investment" because people need a place to live and the supply is artificially constrained. Personally don't see why the barrier to having a place to live for new generations should be raised just so that boomers can guarantee returns on an asset.
So people who want to park their money in a house rather than living in it are discouraged to buy up the available housing.
Yup, good. Seems like it should be going exactly as expected.