Good to see this article, although I agree that we should not call her "Mrs Gove", when that is not her name.
Also, to correct her on one thing - in my local John Lewis at least, there is no separate women's room for breastfeeding. There is a "parents' room" with a room inside it at one end, containing a toilet. Then several changing stations in the middle, and then two feeding areas at the other end, each with several chairs.
Personally I would prefer one of the feeding areas to be women-only, so that any women who feel uncomfortable breastfeeding can do so without the male gaze.
I didn't have a problem BFing in public once I'd figured it out and could do it discreetly, but in the early days when my breasts were very sore, and it took ages to latch the baby, I preferred to do it in private but would not have minded other women being there.