The actual programme has annoyed a lot of serving and ex serving special service soldiers. They hate their name being used in it because it devalues what they had to go through to get into the regiment. While the challenges look and are tough for your average civilian they're not a patch on the real deal for obvious reasons. When you look at the minuscule pass rate for the real regiment and that's amongst motivated highly fit soldiers you can understand them not wanting it to be called SAS anything.
Somebody once said a soldier is everyone's hero in wartime and everyone's pariah in peacetime. Ask any garrison town in the country and they'll agree as gangs of young fit men trained to be aggressive descend on their town centres of a weekend. If you then add in service trauma into the mix then that's a lot of potential ticking timebombs in society. Civvy street is hard to readjust into for a lot of ex servicemen/women and that's a fact.
Many can sit and slag off Middleton for the crime he committed n 2013 and he himself has said he regrets it and is sorry. He was sentenced to 14 months inside and served 4. It is credit to him he turned his life around and indeed tries to help others now.
As for the show, ex battle hardened ex special forces soldier meets luvvie programme producers was always going to lead to confrontation somewhere along the line.
The chasm between society and the military is only going to grow wider as pc and wokeness increases. While that same society still wants and needs mainly young fit men to go and fight wars and deal with terrorists in it's midst it will have to deal with the odd fall out now and then.