I can think of several purposes someone might claim that this has. All of them seem pretty dubious to me though, so if you think it's obvious, I would be interested in hearing what you think it is.
If the actual argument is "I'm fairly confident that the founders of this startup believe that the publicity from this will be more beneficial than harmful", that seems like a defensible but arguable view, and I would find it interesting to dig more into the assumptions around that. Is it based solely on expectations of how the founders would think, or on how the general perception of other people in the industry (job applicants, potential investors, etc.) tend to view things like this? Or even a more broad statement about human psychology (e.g. society as a whole ends up acting in ways that benefit actors who are well-known even if it's not for good reasons)?
Maybe I'm too naive or not smart enough to know what everyone else thinks about this, but none of this seems particularly obvious to me! I would expect a lot of people to have very different views on all of it, and those types of discussions are among the type that I come to HN for.
In a different market with a serious business where long term reputation matters, maybe bad publicity could be a factor. But this startup is likely to go under within a year and the founder will shed it like a skin and move on it it does. So they don't have a strong reason to care about negative press if any (and I still think this article is probably worth the cost of one tattoo artist for them).
I've never seen this, but I don't live in the Bay Area, so maybe I'm just out of the loop. All of this is useful context though, and the type of thing I was looking for when I asked!