The why the acrobatics ? What does that have to do with rock and roll?
A lot of performers have decided that the show matters as much as, or even more than, the music being performed. Part of it is how the business works- writers get paid for every broadcast, album sale and performance, but the performers only make money from the live shows, so they go OTT sometimes. Not always a bad thing; the way Jean Michel Jarre will turn an entire city into his stage (including draping white cloth on scyscrapers to use as projection screens) is one of those things deserving of the “Bucket List”.
When you can’t actually write music or play an instrument you distract the crowd with extraneous BS.