Real world example with a HNW individual and spouse relocating from IL to FL in 2021. This is with the homestead exemption.

IL residence custom built in 1987 and sold in 2021 for $749k. Last property tax bill was just over $24k because the property assessment was out of whack by several hundred thousand. Bought house in N Naples which was appraised at $2.97 million in 2021 and $3.06 million in 2022. Property tax was $32k in 2021 and $31.7k in 2022. The guy saved, by my estimation, $30-40k in IL income tax (he's an FC with a ton of HNW clients in FL). So there's that.

Personally, I sold a commercial building in IL last year and got slapped with a ~15K tax bill which was all depreciation recapture (fully depreciated from 1989 which reduced basis to $0). The dumb thing had hardly appreciated in all those years.

I've got tons of other examples that contradict that article but I'll spare everyone.