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The only people writing about their revenue are online business influencers.

That seems to be quite true, as people who run a successful and enjoyable business are busy running their successful and enjoyable business :-)

"Building in public" is a reasonable marketing tactic, I wouldn't discount it entirely.

Marketing tactics only work if they reach your customers, and HN readers are generally not my customers.

I was addressing the "people who run a successful and enjoyable business" comment, not you specifically.