Yes, while I am in awe of certain stages of KC's career, videos I have seen of them confirm them to be pretty much up their own arses.
I walked pretty swiftly out of a Jah Wobble/Bill Laswell gig a few years back. Same reason. This was a gig in which Mr Wobble thoguht the bass should not only have centre stage but drown out all other instruments. (No, not all bass players are like that.)
That may be the only one I've actually walked out of. But I have fallen asleep twice, in front of Nils Lofgren and the Stones. Long days' hitch-hiking ahead of the gig was to blame in both cases.
Oh. I tell a lie. I was given comps to see the Bay City Rollers' farewell gig (one of many, I suspect) in Edinburgh a few years ago. It seemed like a Moment so I went along. Support acts were the Glitter Band (dreadful, with Gary unavoidably detained elsewhere); T Rex (with no original members but pretty good in a MA's Man sort of way); and Alvin Stardust, who was sensationally good, a real pro. He died soon afterwards, or I would have gone to see him again. The BCRs came on and clearly could not have cared less. Les phoned his vocals in and walked away between verses and even lines; and instead of playing bass Woody was handing out autographs or phone numbers to the no-longer-young fans at the front. I walked out after three numbers.