Because there really is no point xP
If the question is going to be hidden the the asker most likely won't see the answer before it is hidden. Pokemaster has said himself that he doesn't want people to answer questions that will be hidden as well.
Quite often you can ask questions that are against the rules in chat for a satisfactory response. In fact, most questions that are hidden on the PokeBase are hidden because they are for chat in the first place (that or it is a duplicate question, and in that case you can just link the question to them).