Here's the thing about social media folks:
Post on your own feed = people who follow you and presumably want to know your thoughts will see it.
Reply to someone else's post = you are demanding attention from someone else, so you'd be well advised to check whether you are telling them something they likely already know.
Wanna share a thought based on what someone else said? Bare minimum, respect their expertise and acknowledge their contribution.
@emilymbender I'm sorry about the replies you're getting that illustrate exactly the problem you're suggesting a solution to here. The perspectives are not necessarily invalid, but the tone of many posts screams 'you're not the boss of me'. What are we, 5?
> Reply to someone else's post = you are demanding attention from someone else
@mention someone and we are, for sure. Do people always see replies that don't @mention them? Maybe only if someone on that service follows the person replying?