Would like to have gone - but even without having gone, I can confidently say no it's unlikely to be as bad as this silly non-article is trying to suggest. It doesn't take long to see it as a typical showbiz non-story. It goes from saying "some branded it the worst gig ever" to citing ONE person who tweeted she thought it was the worst gig ever. It cites a "mass walk-out" which turns out to have been "hundreds leaving early" which happens at any gig this capacity with even people who have been enjoying it leaving to early to get ahead of the crush at exits and tube stations etc; that's nothing new. Then at the end they cite someone tweeting it was "the BEST gig ever".
People with Madonna's global profile always attract huge numbers of detractors, so whatever she does and says will be followed by a wave of bellyaching. If she found a cure for cancer or a way or irrigating deserts, she'd be criticised for it. Still, it gave the Mail Online the chance to publish 12 images and a video of an artist who will always draw comment from those who both love and hate her, so hit-wise I'm sure they've done pretty well from it.