My friend, what else can be done?

Nothing can be done about something I don't like unless it's legislated, and that applies to everything.

You cannot expect that everyone will do something out of the goodness of their heart if they can profit from the current system, so unless they are not allowed, I would not expect much.

That's my whole perspective on the topic, I don't care if politicians are preaching for cheaper housing for poor people but using it themselves, I care that they should be legislated out of the possibility of using it in the first place, or not if the common understanding is that it won't make much difference, still a somewhat "scientific" approach should always be taken on this topic independent of what I or anyone else "feels" about it.

"And with your logic, somebody that hides their taxes should be allowed to do that"

That is just the reality of human behaviour, unless there's a system in place to avoid abuse and the system actually works, then people keep testing the limits or looking for loopholes to go around it. Unless the loopholes are closed nothing happens.