What? have you realised how trite that sounds? iOS just works, Android also 'just works' (I have both). Are we never to move on from these ridiculous puerile statements? Good workmen never blame their tools.
I agree it's a very vague and 'Apple' thing to say, but there's a degree of logic behind it. I don't find Android difficult to use at all but it's not unusual to find people struggling with it (they do with iOS too I suppose). Certain skins make Android harder to use than it needs to be though, it's not at all uniform unless you keep buying the same brand devices.