> If they dislike it, they can fork my project and go away.

I definitely agree with you here. Forking, almost by definition, means the "D" in BDFL is a joke. The author pretending that "D" is deadly serious is an incredibly counterproductive and passive-aggressive way to express their concern.

Still, the question remains-- if your project has more than a single developer, have you communicated to your project members who you think has the best knowledge and ability to take over after you're gone? If the only developer is you then the question is moot. Otherwise, it's false modesty to pretend that's none of your business.