I don't think he's really telling others what to do; I think he's writing about what he's figured out for himself, and then stripping it down to a minimal expression. The minimalism—a kind of intellectual optimization—matters more to him than how people react.

The "sharing with other humans" aspects is an interesting point though, because the way that pg strips things down to minimal expression involves stripping out the signals that make people feel they're being shared with. I wrote about this point 15 years ago (a horrible thing to say, but I'll link to it nonetheless): https://news.ycombinator.com/item?id=143575.