"And a review on Trip Adviser from last year reads: "A bunch of us mums used to visit here frequently with our babies.""
History here, isn't there? Used to be filled with prams, and new mother gatherings are notoriously poor return for a cafe (huge amount of space taken up, low level of purchasing, significant deterrent to other customers)
They've changed their minds, and I think that's absolutely fine.
Indeed I prefer places which are not colonised by baby/toddler groups now I'm past that stage.
And think it is totally right that proprietors decide for themselves what market sector they pitch for.