In Craig's defence, he claims to be a nurse so may well work in the NHS. The trade unions in healthcare let their workers down really badly during negotiations for the last pay deal and only realised that the government had pulled a fast one when it was too late. Ten years ago we went on strike, ostensibly over pensions but actually over general NHS reforms. Our pensions still got taken away. As soon as I was in a position where I could leave my union and join a more specialist one, I did.
I'm aware that there is more to trade unionism than the big negotiations and I'm sure that they do plenty behind the scenes as it were, both at individual level and in consultations with executives etc but there are examples where unions have badly let down their members, who pay their subs every month. Even the much lauded Mick Lynch and the RMT were, I understand, supporters of Brexit and I can't imagine that's done their members much good.