There is so much truth in what Justin Kan said. A CEO at an early stage startup has to worry about so many things and each worry feels arising from a different unconnected problem. But this article boils down the most common causes of it. I would bookmark it and read it often as a reminder.
It's a cultural thing. In a lot of places I grew up, that would be unacceptable and unprofessional. When I went through Y Combinator, I heard a good fraction of the partners cuss their way through most of their sentences. It can be jarring at first to some, but it's also a certain aura they cast upon the room of speaking unadulterated and unfiltered truth, which is also good in its own way.
What is it about using the word "shit" that makes the article's contents not worth parsing to you? The tone of the article is very casual, and in casual English dialogue plenty of very intelligent people say "curse words" all the time. It sounds like you have a less than friendly bias towards people for little more than a variation in dialect.
Separate observation but in my experience people who speak English as a second language tend to speak much more properly, and use curse words much less than native speakers.
