Neither person is entitled to the work of the other and neither wants to do the work which seems to be how we ended up here. The author can't make demands of the project and so wrote a blog post warning others that it's not production ready and you'll have broken software if you use it. Their conclusion isn't that they must fix it but that you should use a more mature library.

Two adults both defected in the social prisoner's dilemma and so here we are. Both individuals believing to have done free labor for the other and that they should be grateful.