I'm not sure in what way that reflects on their knowledge of the Laws. The point I was trying to make was that pundits are not always clueless as regards the law and I don't see how correctly calling a very close offside decision invalidates that.
What they were talking about was whether, with the benefit of replays and freeze frame, it was possible to say that the player was offside, not how difficult it can be for the officials to judge offside. They also didn't say that it was clear in real time, only after using the freeze frame - and on the freeze frame, as they correctly stated, the player was clearly in an offside position (even if only marginally so).