Whoever suggested that was obviously not a breastfeeding working mother.
I was thinking the same thing!

I didn't have to deal with going back to work but in the early days of BF the cluster feeds at night were too much for me and I would pump a bottle in the morning (when I had an abundant supply) to give my BBs a break at night (when my supply was lower). There was no way I could possibly have pumped at night. Ds did just fine though.

Interesting article though