The dig is in the 'oh God' and 'this is why' part of his explanation for not wanting to play, reacting negatively to a question directed at
Jale that she answered happily, does this really need explaining anymore? It's quite obvious how it's a dig

saying 'I don't want to play' would have been one thing, to turn your nose up at the direction the game was taking in the form of the 'oh God' comment and then to further that by saying 'this is why I'm not playing' is a dig, I don't think it gets more clear cut than that? It doesn't matter if he wasn't stopping anyone else from playing, he didn't need to react negatively to a question that wasn't his and at a time when
no one was asking if he was playing either. He said it out of the blue for no real necessary reason at all
She didn't swipe at him initially because she likes Mark, that goes without saying, no? Although once Mark piped up and said he'd made a comment too she did then have a go at him as well. You seem to be making the mistake of thinking I'm justifying Helen's behaviour when I've made quite clear that I'm not and that she went ridiculously over the top and she has anger issues, but that doesn't mean that Matthew didn't make a comment that wasn't needed. Again I'll reiterate...I don't think the reaction he received was warranted, but he didn't need to make that comment in the first place.
And no I'm not averse to him having an opinion wtf is this

in fact in entertainment terms I'm
glad he spoke up and I'm
glad she reacted so stupidly because it gave us half an hour of great TV in order for us to be able to have this discussion, but if I'm gonna sit back and objectively look at it and form an opinion on the issues raised then yes I do think in that instance he should either have just stayed quiet or left the room. No one asked if he was playing and the question wasn't directed at him, there was no need for him to say anything negative like that