I agree with NS, not sure about big gigs but at smaller ones people often miss the supporting act. If the initial action and court order cited only Little Mix then the promoter complied.
This reminds me of the case a few years ago where a mum issued proceedings against a school that was going on an adventures holiday because her disabled daughter couldn’t join in the archery. They’d adapted everything else but fir this she had been offered a video camera to film and report it all. The mum objected sobthe school was ordered to drop the archery and no child got to do it.
Got mixed feeling about that too but I guess if the outcome is that the centre provides wheelchair archery now that’s a good thing?