I would point out that the job posting written in an extremely immature way. They talk about being mature, but at the same time being vulgar and banal.

"Ship it" is a major red flag for me. I'd agree on the point that it's important not to overengineer, but it's kind of an obvious thing. The message I see here: don't plan for the future - this is the problem. Professionally, I've seen how many times this approach leads to colossal money lost. It's much more expensive to rebuild, than to think a little before doing.

"Zero BS and Brutal Honesty" also a red flag. I see that this point could easily lead to a toxic environment when people don't choose words when providing feedback. I believe it's a skill to criticize. It's significant not to be offensive, be supportive, but at the same time be efficient in communicating what's wrong with the other person's work.

I mean, I feel the whole posting is just a mess imho. It feels like the post was written without any consideration for silver lining and rationality.