The interviewer's completely incompetent. A very unimpressive load of idiocy. He's got no figures, no comparisons, just vague accusations. He's clearly trying to find shortcomings in the PO guy, and hasn't found any so he's "not happy with the answers".
He's positing straw-man arguments and asking the PO many to justify other people's criticism of him.
A fool. Never heard of a PDA ffs, doesn't know what it's for. The sort of politician who's never had a job, perhaps.
He even went low enough to imply the PO man wasn't being honest, with zero evidence cited. Sack him.