Why is that an example? Plenty of ex-whatever-religion (or even ex-particular-denomination) people turn right into the most extreme and hateful bigots against the group they departed.
It’s a frequently commented on phenomenon among religious people, often not focussing on betrayal by departing members (where the bias of attachment to their own identity group might make them prone to overperceive) but on the trend among converts to their own religion.
It would be weird if a group tracking hateful religious bigots systematically excluded former members of the targeted religious group from the label.
Do you really think that ex-Muslims are irrationally fearful of Muslims? Or, perhaps is handwaving away as "phobia" a cop out to any criticism at all?
EDIT: Seems like it still works, just call someone a phobe or an ist and instantly shut down any criticism. There are no ex-Muslims with valid issues against Islam because they're just bigoted, obviously. Use whatever word games you need in order to shut down conversation. Pretty interesting coming from the same people that say they care about women, gay, and minority rights.
The use of “-phobe” as a suffix with the meaning “bigot against” (rooted originally in the belief that bigotry is tied to fear, but now operating largely independent of any assumption of the basis of the particular bigotry) is pretty well-established in English; the main case where its not used are for gender-based bigotry where the “mis—ist” circumfix is used around an existing Greek root.
Now, me, I like my organizations to never admit-- uh, I mean make mistakes.
https://www.theatlantic.com/politics/archive/2018/06/maajid-...