I quite enjoyed the set at the time and am not qualified to comment on the dementia point, but I commented at the time that she didn’t have the presence of a Dolly/Lionel/Kylie.
Watching a video back of Baby Love her voice is so weak it sounds like bad karaoke - her backing singers were noticeably far stronger when they were named towards the end of the set. All in all it was a bit sad.
On topic but separate, I thought Calvin Harris was terrible. Uninspired setlist, terrible sound quality (was stood at the top of the field, outside of the spider), he didn’t event say hello or goodbye, people left in droves… Would be gutted if I had specifically paid for it.