I personally decided it is wiser to heed the counsel and find my addons at developers who have not fallen out of favour with the Xenforo team and community. I wasn't here at the time but caught the trail end of exchanges on here, and a couple more forums. I would not presume being able to judge the coding quality of an addon, but seemingly this situation wasn't about that. There may or may not have been misunderstandings, but something much more serious happened. What @mcatze says: Archives.