Didn't see the program so can't comment on Monty's exact words. But surely we all have likes and dislikes? I've never liked carnations- although I love the small wild pinks which are currently growing all over the place on banks around here in the Jura mountains. Never likes by Chrystanthemums which remind me of plastic funeral flowers... And generally am not fond of tidy border plants in neat rows.
I love perennials as in curate's gardens, à la Gertrude Jekyll or Beth Chato, with plants taking over with new colour and texture as others fade.
At the moment out in the wild around here, arnica, kingcups, pink bistorts, large daisies, blue and white Jacob's ladders, Sainfoin, tall blue sage- and so many more.