if I heard homophobic abuse at any other ground I would also call it out. I know I<3nix would too, in fact has called out poor language on an ITBOTN blog during the ASBP season. So your claim of double standards is absolute rubbish.
As I said earlier, I can picture exactly where that abuse will have come from, as I have heard (and commented on) other abuse coming from there on a fair few occasions I have visited Wakefield. What that also means is it is clearly a subsection of the supporters, rather than representative of Olympic supporters as a whole. It'd be good to see the club/fans/players try to correct or at least condemn the behaviour of the subsection rather than cry double standards every time someone says something bad about an aspect club (or a refereeing decision doesn't go their way).