Finally a fellow georgist. How does one work to promote LVT? You mean you got paid to do it and despite that, you are now against georgism?

IMHO, your reasoning is weird and blown out of proportion. Measuring value of land and housing is easy and is done today for the market, for insurance and for taxing purposes. This could be a reason for georgism to become unpopular, but it isn't a reason against georgism.

in our case added 0 value to our property and in fact removed value

The common reasoning with negative value land. This is only brought up because it is an issue in todays world. It wouldn't even be an issue with an LVT. If a strip of land is only costing money, just give it back to the Gov so they need to take care for it, you're not a charity. Otherwise it has a measurable value which you are denying to win an argument.

It introduces just as many problems as it those it claims to solve.

No it doesn't. I see one "Problem" LVT doesn't solve, but you haven't mentioned this one yet.

It makes sense in some limited contexts, like say, urban land use across small and regular parcels, but not all land is urban land. You forget that George was writing when society 70% agricultural and rural and working off a model of undeveloped land.

This is not valid. George focused on New York. It did include everything from agriculture to fully developed Manhattan. It's called Land Value Tax, not Land Tax.