Yes exactly. I've forked many a library to meet my own needs. Usually temporary, but not always. The fact that I can do this when I have to means I can use basically any library. The submitted post is written from the perspective of some kind of social network project. People saying "just fork it" in that perspective are clearly missing the bigger picture, hence the post. And the author of that post, didn't acknowledge that FOSS is much more varied than their particular project.