Heh... I forgot to make the defence of why some meta-reasons like the one voiced in this game could be fair... (unless "quoted" or opened in any other way)
If a wolf makes a conscious "error" regarding the number of wolves s/he makes her/himself look very good by the innocents - in a meta-reason level!
Like it or not, but that kind of clumsiness, especially from a seasoned and extremely sharp player, basically whitewashes that person in the back of our heads; not because of what s/he has said in the thread as to suspect or defend, but because of what kind of meta-game impression s/he gives of her/him.
And there must be a way to fight against that kind of tactics as well...