Pervasive pattern of negativistic attitudes and passive resistance to everything like they are the devil's advocate. It is annoying and turns a thoughtful, meaningful discussion into a feeling that one must constantly defend themselves. Not that defending themselves achieves anything with these people.
On a forum, where threads are started to share, and get insights, expressions of negativity to all postings in non productive and not helpful to learning process, insights, or reconsideration of position with alternative presentations because the passive resistance doesn't give any alternatives. The indirect expression of hostility, stubbornness, sullenness, or deliberate or repeated failure to bring anything to the threads except negativity is a big dose of wasted breath. They show purposeful inefficiency for the sake it seems to kill the life and spirit of God moving upon His people. I call it obstructionist resistance.