I used to watch the Sunday Supplement, but since ditching Sky cant say Ive missed it at all.
It really depended on who was on. If I saw Patrick Barclay, for example, Id switch it off immediately.
The people on there, most often, have entirely clear ego, bias and agenda. And they dont half spout some brick.
The only bits of insight I ever really appreciated from them is when they would speak about interations in press conferences, bits that dont make the papers.
Otherwise I saw very little to qualify all the crap they come out with.