I think that's true. It hasn't always been like this, and I don't think it's because the population of GAF has changed dramatically. But when life gives you Ed Miliband, make lemonade, as they famously say.
Edit: I think the key problem isn't that he's crap (though he is), it's just that he's so uncontentious. He has so few significant policy positions (allowing public sector to bid on train franchises, capping private rent rises, capping energy bills... Otherwise, he's signed up to the Tory spending plans, and he agreed on spending restraint whilst voting against all the actual legislation to achieve it.) If he were Kinnock or Benn or Blair or even Foot then there'd be something to discuss, but it seems that Labour's main solutions are so utterly piecemeal and, politically, insignificant that he's basically a non-entity. Meanwhile, the coalition has actually enacted some fairly radical reforms (which is separate to "good" reforms - personally I like most of them, but there is at least something to discuss there).
Obviously the Lib Dems supporters are pretty quiet. Dead men tell no talllllleeeeessss!