What if I sit on the chair in a public place? Surely that constitutes a performance of the chair; after all to sit on a chair is to perform its essential function.
No. The performance right is for "literary, dramatic or musical work[s]".
(Remember: legislation is drafted by lawyers whose entire job is to make a document that is as painfully, excruciatingly unambiguous as English allows. Each of those rights in the short list I posted has long sections clarifying very precisely what it means. Where ambiguities or absurdities remain, there's probably been a lawsuit over them in the past 25 odd years, and a judge will have spent dozens of pages analysing each one.
In other words - criticising an act by trying to spot semantic absurdities based on a tiny extract of its summary is probably not a sensible game to play..)