That's frustrating! I'm sorry your post was responded to like that when you are just trying to help.
Over the last few years I have mellowed to live and let live with most things.
I don't generally share my strong opinions unless asked and as such don't post parenting stuff ( mommy war) or other highly controversial subjects on fb. Just not worth it to me.
For the same token I don't comment on stuff I don't agree with.
If its really bad ( I once saw a ff picture of a 6 month old) then I send a polite private message worded as non offensively as possible and hope for the best. (((hugs)))