That's a good point. I've been to countless concerts, and never witnessed an act calling out an individual for not being into it. Closest I saw was "Beck" on the "Midnight Vultures" tour, who was actually genuinely concerned that the crowd wasn't into the songs and presentation, because we were all just kind of grooving to it and watching the spectacle, but not making a lot of noise. He stopped the show for a minute and asked the crowd if they were digging it, and everyone cheered, and he moved on.
To point at a single person seemingly not celebrating your "artistic genius", takes one hell of an insecure person to even consider doing it. I can almost guarantee she spends all day on social media getting triggered by comments about her, and looked at this person as "one of them". She should just be happy that the gate is sold out for her old ass.