Earlier quoted context omitted.
Aren't most of the housing issues in this country NIMBYism and zoning? NIMBYism lead by vocal, wealthy property owners? Zoning controlled by governments lead and captured by wealthy and corporate interests?
Many of the NIMBY property owners are not nearly wealthy enough to be affected by most wealth tax proposals (e.g., the "few tens of millions" suggested in the article).
Taxing the extremely wealthy basically does nothing to decrease the property values of this class of people en masse, and decreasing their property values en masse is precisely what it would mean to make housing more affordable for more people.