I reached the programme with the utmost ease via their email address:

saturdaylive@bbc.co.uk

and congratulated them on the item. There is not the slightest point in 'shouting' at a producer or editor over the inane behaviour of a presenter. That's for Feedback.
Editorial content is determined not by those fronting the show but by the production team, and letting them know they've done something right will result in more of the sort programme content YOU want.

My speculation was whether public service broadcasting's stance on the tradarts was already shifting in the light of recent programming. Whingeing at production staff about the presenter will only result in demoralised planning meetings doing likewise, rather than in the generation of fresh new ideas arising from a positive response to a well-produced item.