I am probably the most guilty of using the term "snake handler;" however, I am not aware of a single FReeper who has ever publicly or privately identified themselves as a member of a church where snake handling is practiced.
Am I to assume that terms that people such as Jesse Jackson use to describe Jews COULD NOT be used on here the way that Romanist and Papist is used?
In the same way your use of the term "snake handler" to disparage a group of believers is acceptable on an "open" RF thread, a generalized or historical pejorative may be acceptable. But if the term is used to smear another Freeper, personally, it will result in a warning or perhaps the remark being pulled.