@Mastodon It's good to see that there is genuine intention to continue improving Mastodon. Genuinely curious to see what effect this feature will have.
Realistically, a reminder to be nicer might work on someone replying impulsively, but quite a few people online feel entitled to responding to strangers without a filter to their language or aggression, and it's doubtful that this will have much effect on them.
From a glimpse, there are enough irritated and angry replies to this post alone, about this feature, perceiving it as seemingly something that polices how they use social media, to make one question if it'd stop the same people from responding in an aggressive way.
Beyond that, quite a few people are not aware that their unsolicited advice or comments are a form of microaggression, so they still believe that they are being nice, reminder or not.
I'm gonna second all the other people suggesting that a way to not allow replies, or control who replies, would be a welcome feature that people can opt-in or out from on an individual level, as it overall allows for more control.
Pragmatically, I don't think any of us expects to completely eliminate unwanted replies when posting publicly, but any option to limit them is a good step forward, especially when it comes to making social media more welcoming to minorities and marginalised groups. So it's good seeing this conversation happening.