I ... don't remember Ame being specifically against a wiki, but like Jan and Author say, we already have a wealth of information here on the forums so perhaps there isn't a need for one.
If memory serves, we do have some pages on TvTropes though...
edit:
A brief google search found me a Pokemon Reborn wiki, but I don't think that's the Reborn you had in mind, lol.
Did find the TvTropes page though.