"Don't feed egregious comments by replying; flag them instead."

"Please don't sneer, including at the rest of the community."

https://news.ycombinator.com/newsguidelines.html

Okay, I’ll flag it, thanks dang

Grandparent post is insensitive to others who experience depression differently than they do.

GP deserves empathy, of course. At the same time, the judgement in their post is quite harsh and negative.

His initial post is disregards others based his own personal experience.

It's not callous at all. Why would anyone expect random social media users to do more than post the number? If I was the type of person to try and talk people out of suicide I wouldn't be doing it on social media, it'd be volunteering for that hotline. Obviously the number works for many people.