Meh. I'm a commie, and it's just a half measure. It attacks the problem of landlordism, sure, but it doesn't fight concentration of wealth in other forms, such as financial capital, capitalist ownership of media and means of production, or even climate change.
Moreover, it doesn't provide any means for organizing and actually carrying out the policy, which is why it never happens. Ideology and politics aren't exclusively a theoretical field in which we can democratically test every policy without disturbance, and Georgism doesn't answer the simple question: why would the landlords in power allow the workers to tax them our of power?
This is a fairly new phenomenon during capitalism, though. People lived in community, sharing everything and contributing without measurement of work, for the longest time in human history. It's only class society that created the breeding ground for such behavior, it's not human nature, it's caused by the environment.