If I'm understanding the EDDM tool correctly, the data broker appears to be the USPS.
For a privacy-focused browser, that is definitely odd.
I haven't done any of the extreme privacy things, but I do use a PO box for almost everything, and thus I really don't ever get anything addressed to my name sent to my actual residence.
Does it bother me? Not in the slightest. It's a community notice, and the Brave thing would only annoy me if it hit the levels that AOL CDs were at in the 90s.
Probably based on a mix of local laws and/or how profitable each city is to market to.
None of them are addressed to me personally by name.
The story seems like trying to make lemons into lemonade. "Well, we wasted money, but maybe we can get a bit of privacy protecting glow from this cock-up anyway."