Who I maintain relations with and who I don't is not other people's business similarly who I follow and who I don't follow should not be visible to anyone except me but that is not the case.
I can go on and on about similar things but the bottom line is everything on Instagram is designed in a way such that it generates more activity on platform and ultimately more revenue. This is true for almost all the social networks though. A social network that respects norms of our society and does not attempt at maximizing revenue at users expense will probably fill the void left by the existing ones.
What reason do you have for thinking the public at large is worried about the norms of society being maintained?