Is this mostly because of hobby purists who don't want mixed species breeding, or is there really that much concern for the individual frogs being mixed? I'm just wondering because sometimes I find that the internet crowd can be a little overzealous when it comes to these types of things.

Just trying to understand why I can't mix, as I was pretty disappointed to find this out.

EDIT: Some quick reading shows I did not realize what I can of worms I was opening up here. Should probably just let this thread die.