Surely all tweeness is relative and depends entirely on what you personally feel is heartfelt? There's no such thing as absolute good taste. And, sorry, but most accusations of tweeness do get directed at women, which is completely down to relative positions of power in dictating taste.
More positively, I'd like to suggest the main problem with Mike Harding's show is the very predictable roster of artists week in, week out, and not actually to do with the abilities of any of those performers who Smooth Ops choose to overexpose. But then, if a national broadcaster gives a production company just 1 hour a week in which to present an accessible folk prog then they'll do just that - and choose the most accessible material. Maybe we should stop carping at Mike Harding and think instead about lobbying the big cheeses at the Beeb for some more time slots.