It's interesting, but reeks of someone coming to a conclusion and then trying to back it up, rather than disprove it - bad science, in other words. All his clips are from the first ten minutes, when a guy who hasn't been playing much has likely been told to feel his way into the game, get time on the ball and don't do anything silly. When we were chasing the game, Hanley did step forward more and more and was more progressive with his passing. If he'd not done his brainfart in the final minute, we'd have been describing a solid performance from the back two. The clip he shows of their goal doesn't highlight any issues with Hanley at all. In fact, it does the exact opposite, because had McLean completed his very simple pass in front of Gilmour, our depth had drawn 4-5 of their players too far up and we'd have had a good break on our hands. That may highlight a tactical reason for Hanley not progressing with the ball, but there's not enough evidence to go on because things will have changed as soon as they scored. For me the issue is, and always has been, a not match fit Hanley versus a match fit one. In the prior European campaign and part of qualifying for the most recent, Hanley was playing regularly and performing well for Scotland. He was confident on the ball (despite being limited, of course) and moved it on well. When not playing every week, he's always struggled with concentration and confidence as you'd expect.
I'd have Porteous in every week to be honest. He's always confident (sometimes negligently!) and is fine going forward with the ball. Hanley has carved out a very decent international career for a limited player, through hard work and giving his all on the pitch, but it's time for him to step aside.