There are most definitely ppl that are militantly anti-hybrid.
I can name a good few, namely 99% of the members at www.HerpFamily.com they beat on me every single chance they get.
And Nick Mutton at Inland Empire is one of the most anti-hybrid ppl you can find anywhere. This isn't derogatory, he will admit to it.

I just like to put it in a math equation.
X = number of species a purist can own.
X · X = number of animals an open minded herper can own.
(stupid kingsnake doesn't allow html so I can't make the proper symbols for a math equation. As a web designer, yes denying simple text formatting html tags is stupid)