As far as I know there is no exception to SE's question banning policy on this site. However, you have to really ask a lot of inactive ID questions without many other reasonable questions asked among them. So I do not see a big problem with this mechanism being in place, as it was exactly established for the StackOverflow version of identification-only askers originally.
In addition to that, as sepcified in the respective FAQ answer, deleted questions only count against the "bad question" statistics if they were less than 30 days old at the time of deletion, which is usually not the case, since the inactive ID deletion policy only grips after at least 28 days of inactivity (not creation), and even then they're merely eligible for deletion, to be possibly deleted by an explicit manual maintenance action. So even a deleted question will most of the times not count against a possible question ban anyway.
Update: As a result of this discussion, we have extended the period for inactive ID questions to become deletable from 4 weeks to 30 days straight.
