The hostile and deceptive attitude of the maintainer. If they honestly admitted that they didn't give a crap about bug reports, or even just didn't bother setti

The hostile and deceptive attitude of the maintainer. If they honestly admitted that they didn't give a crap about bug reports, or even just didn't bother setting up any system for recieving them, that would disappointing, but achempion's comment would cover the situation nicely. The problem (assuming the previously stated facts are accurate) is they actively set up a system to solicit and recieve bug reports, and then systematically sabotaged and neglected that system when people tried to actually report bugs.