Why is the Great Expectations set so childish?

I just watched this show by virtue of being at home on maternity leave - and I'm appalled at the set!

Why on earth are professional women, the show's obvious target market, being patronised like this? Because we're new mothers all our adult aesthetic sensibilities are now replaced by ridiculous nursery motifs and toddler prints? How about acknowledging that we're not children, and give us a set that at least connects us to the grown intelligent women we are instead of buying into this ridiculous notion that mothers are simply tall toddlers.

C'mon Sam Cowen - you can do better than this!