The overall claim is true - yes put it on a map.

But I'm not a fan of these particular maps because the use of 3d makes them harder to read. The isometric view and rotation away from north at the top break conventions that people use to orient themselves in the map and connect it to their lived experiences on the ground. I'm reasonably familiar with NYC geography, and I could not immediately recognize the landscape I was looking at in these maps. Ironically, it was only because I already knew the answer to the question that I could do so: "oh that huge green spike must be Manhattan".

I think a 2d choropleth map with a diverging color scale centered on the mean value would work better.

The main purpose of the 3D is to communicate the extreme differences in scale of value, which chloropleth alone doesn’t always get across as it flattens the magnitude disparity. Keeping true north to avoid confusion is a good point.

Yeah, I agree. And if the surface is complex the Z features tend to obscure the complexity. I make maps like these for the cities of Berkeley and Oakland, but I use a color scale. And I usually aggregate at a larger granule than parcels. For e.g. https://observablehq.com/@jwb/2024-25-berkeley-property-tax-...