You are inflexible in your private and particular interpretation of the rules. There is no rule that says that external links, even if fully appropriate, must be removed in case of a possible conflict of interest. There is even less of a rule that if a previously removed external link is re-instated by several editors in good standing, who have no such conflict of interest and who add the external link based on their considered judgement of its merits, it shall, must and will nevertheless remain removed, if necessary by indefinite reverts, to which task you have been called. Or did I miss something? In that case, please edify me.  Talk