i am a paternal person. i was also breast fed as a baby.. Maybe breast feeding has something to do with the outlook of a child as well as all that other stuff.. I have yet to ask my mother if she ever breast fed me in public back then.. 40 some-odd years ago..
But personally, if the mother does something to cover up the actual visual feeding of the child, and doesn't make a 'show' of feeding the child. I see nothing wrong with it being done anywhere..
The lipstick thing is much more, Hmm, disgusting is a bit to strong a word, and annoying to weak a word. The *LOOK AT ME* attitude bites at anytime in public.
Females have Teats, thats what they are for.. so long as i don't have to have it shoved in my face, no biggie to me..
Hmm, lemme rephraise that..

So long as there not bared in my face to feed a child, no biggie...
Cause if they are, i want some to!! LOL