Sounds like a criticism that can be aimed at the vast majority of wingers to be fair. Wingers are the most frustrating players in any team -one week they can be brilliant and make all of the right decisions, next week they can't beat their full-back.
There’s nuances to it though. The criticism of Lokilo was that he never beat his man. He was extremely predictable and almost always turned inside to play the most simple pass that killed any momentum.
Millar can actually beat his man and often does. He’s a great dribbler and plays with far more confidence than someone like Lokilo. The criticism of Millar is that he’ll take one too many touches or makes the wrong decision. Giles was getting quite frustrated with him as Millar wasn’t making the right pass to him.