I'd personally like to point out that more than just Warrior Cats-based roleplays do these things, with their mannerisms and sometimes annoying, but perhaps not fully intentional false advertising (I didn't know what 'literate' actually meant at one time, and seeing other advertisements using it may cause some to deduce that their group may be the same, even if upholding more of a semi-literate style.)
Now of course, some of these things attribute mostly and perhaps solely to the Warrior Cats-based groups, for example unrealistic names that make little or no sense within the appointed universe, or perhaps strange designs or other-worldly storylines made by the players that were not confirmed with the leader of a said group.
These types of roleplays will occasionally lead up to their self-formed stereotypes- sometimes the people behind the screen may be irrational, or as some groups attack those standing by in the backround they wish to include all in their universe. But, aye, roleplaying with strangers included is better than not roleplaying at all now! I myself have been in rather interesting roleplays that I have been 'dragged into', so sitting around on a coyote or fox near a clan can sometimes lead to an interesting conclusion.
As mentioned above, the fact that most (if not all I have seen/heard of) Warrior cats roleplay don't allow homosexuality, bisexuality, pansexuality (sure attraction towards both genders), the list goes- you know, basically everything but asexuality and the straight sexuality. (Asexuality, I'm guessing, was only allowed because a sexual interest towards anything simply wasn't present.) I dunno why they call these traits unrealistic, but people may have their views on things- maybe gay cats are slightly unheard of to them, I dunno. You don't hear much cases about 'gay cats' on the internet or basically anywhere, but it's an entirely harmless attribute that simply allows players to be more creative with their characters.
Aaaand now, to add onto WolfNamedCoda's comments:
This is a thread about attributes regarding things one may UNLIKE or NOT APPRECIATE about the Warrior Cats-based roleplay. If you hate it, good for you. However keep in mind that, although opinions of all sorts have the right to be heard, that this doesn't mean no-one will be offended by it, or see the comment as irrational and/or stupid.
It's all a sort of 'think before you say' thing: 'I hate Warrior Cats. Not just dislike, but really really hate everything. It's so stupid! The fanbase, the roleplays, the everything'. Now, assuming that other people thoroughly enjoy reading and roleplaying the series, do you truly believe that, absolutely no-one will be offended by this comment in a rational manner?
Edit: Feareh beat me to it~ Pff, oh-well. More thorough example here, I guess.