My Mum died right before DD1 was born, so my poor unfortunate Dad bore the full brunt of my over-sharing re. childbirth experience swiftly followed by pretty constant breastfeeding for the next 18 months. He was deeply embarrassed at first, but quickly realised that I wasn't exactly stripping to the waist every time, and being flat as a pancake to start with, my bf-ing norks were still pretty "blink and you'll miss them", so you often wouldn't even really notice what I was about at all.
The only comment he ever made was right at the beginning when, blushing furiously, he asked would I actually be able to breastfeed, given that I am so flat of chest, and was I sure I wasn't setting myself up for disappointment.
His brother, my deeply conservative unmarried uncle, had never heard of such carry-on before, looked it up on the internet, and spent the rest of the year proudly informing customers in his job about the virtues of breastfeeding and what a great job his niece was doing.
Poor Dad. He has a lot of unexpected parenting to do since Mum died.
My MIL, on the other hand, decided early on that my breastfeeding was a passive-aggressive comment on her decision NOT to breastfeed her children.
It takes people in different ways.