There are roughly a million violent crimes a year. It is not credible there are 3x as many defensive uses of firearms that are somehow being missed.
The page you reference indexes a few thousand over several years. Seems likely an undercount as the page claims but not by that much by probably a couple orders of magnitude.
A good example of this is comments on this post. They're basically awful and reduce worthwhile traffic on this site by driving away more people than they attract.
The reality of every forum, as the original author says, is that unless you censor topics that attract cranks, you'll eventually become a qanon platform (or the equivalent) and drive out all worthwhile participants.
I'm not sure what the global rule is called, but something like volume nonlinearity or kookiness asymmetry it something. If you have a bunch of looks everyone else leaves. You're options are to get rid of them or fail. It sucks but there it is.
Ultimately wouldn't these rates be set politically? As in, there'd be one politician who says "raise the tax and do this" and another who says "lower the tax and stop doing that" and voters just pick what they want to happen.
Another key factor is enforcement cost. Enforcing a land tax is really easy for a government. You just... Go there and get it. There's no moving the land offshore or having complex relationships or offsets. If someone won't pay the government just assigns the ownership to someone who will and goes on.
Compliance costs with many other taxes are quite high.
The page you reference indexes a few thousand over several years. Seems likely an undercount as the page claims but not by that much by probably a couple orders of magnitude.