Because Georgism has the idea that "lubricating the economy makes everyone better", you can therefore make the link that the economy, not government, is the thing which will rescue us. And while not a part of what seems to be "pure" Georgism, many Georgists have a "reduce government intervention" stand which seems decidely right wing.

Georgism also decries personal income tax, considering it as "legalised theft". To me, this also makes it seem right wing.

Certainly, the idea of "taxing land" may sound a bit left wing, in that you are diluting the idea of land ownership, but as Georgists note, people would have effective control of the land, very close to ownership at present.

Georgists do have a way of "backing off" from the "communistic" anti land ownership consequences of their theory. But they do not have any methods for "backing off" from the right wing and "economic rationalist" correlations which many Georgists have.

Saying it defies categorisation is true but misleading. On the balance, it seems more of a right wing theory to me, though it does have some left wing elements. It is certainly not something which has elevated itself above categorisation.

There's a quite separate issue of whether simplistic categories like "left" and "right" are worth considering. But this has nothing to do with the idea that "on the balance, its right wing".