Marriage proposals occur every day, in private and in public. Social media draws attention to public proposals and influences how elaborate they are: the more extravagant it is, the more attention it receives online.
Several commenters were okay with having a marriage proposal delivered in public. Still, they prefer that it be a modest one that doesn’t draw much attention from bystanders, even if the question is in front of others.
Being the center of any public display is the worst nightmare to come true for introverted people. One such individual affirms they “hate being the center of attention among people I don’t know well, let alone a crowd of literal strangers.”