Earlier quoted context omitted.
The indirect effect of that is subsidising (richer) homeowners at the expense of (poorer) renters. I really don't think that's a good thing.
I dont follow. Taxes would still happen on renter investment property. Just not someones personal home. So no subsiding at all.
1000sqft or 10,000sqft, small rural home or prime real estate, both zero tax. There's no incentive to improve land use.