I disagree. I thought Kenny Clark's intervention was interesting. Everyone (apart from Scott McDonald) understands that deliberate handball must be deliberate. Kenny's view was that McHugh was deliberately making himself big like a goalkeeper would, so the handball was intentional. Michael thought that in the act of throwing himself to the ground McHugh's arm would naturally be thrown upward, therefore no intent.
Both perfectly plausible explanations for the action , and the referee on the day went with Kenny's interpretation - fair enough. I would have gone with Michael's though because I don't think McHugh would have wanted to risk conceding a penalty in that situation. He's still got the goalkeeper behind him - why risk a sending-off?
Separate point - the real star of the match itself was Morelos. Managing to pick himself up and play on after a career-threatening assault and still having the thoughtfulness to give the referee a wee round of applause where it's due. What a gentleman.