Let me put another example of why this is a TAX if you are not convinced yet:
We could TAX 1% to the 1% rich of the rich list without actually having to extract XTZ from their wallet balances, by printing 1% extra XTZ of what is circulating, then, distributing that 1% to all wallet balances (stake based) except to the 1% of the rich list.
I do not agree with this either nor proposing it, it is just to illustrate why printing is taxing.
The only difference is that in this example, the tax is completely classist and discriminatory, and LB is a non-discriminatory flat tax to individual XTZ hodlers.