I hadn't heard about him getting flack for it. That's a shame as he mentioned in an interview that the only way he could get it made was to agree to star. It wasn't his intention to be in it all.I'll give this some bytes later.
My dad recently passed from a Parkinson's related death and so seeing his mind get addled with both 'enhanced' angers and views, whilst just trying to get through a day sits high for me. It also has a cruel shattering effect with regard exaggeration for anyone witnessing it. However, I wouldn't go so far as to say it offers a blanket pass in drama and so will be viewing to see if a true sense of realism runs though this. From what you say, Tom, Henriksen's undeniably underrated gravitas and Mortenson's direction manage this, which gives me hope.
It's a shame Viggo is getting press for whether he's gay and should be playing the role. So annoyingly typical of late.
As for the score, he is an aspiring jazz artist and fan of Dennis Waterman. One of those isn't true.