[spike021]

Nope, here's why.

* single chat client (not a plethora on many platforms these days)

* ability to set online, offline, away, invisible (basically if you're available or not, whereas Facebook/Instagram/Slack don't really have that same separation and even the ones that do tend to not be as popular)

* Single-purpose platform, no other social media needed to carry it. i.e. Instagram's DM's are tucked away. Discord is technically single-purpose, but it's also at its core a social media platform, you need to join servers/Discords for all the separate things you're into, etc. so it's also not a single-purpose platform).