They tried to create a small competitor to Steam's game marketplace but it didn't work out. They're back to the drawing table. Honestly, that's actually really good for free users, like myself, because we can simply use discord's wide array of functionalities for free: Seamless audio and video sharing, wide extensibility of the platform through APIs and bots, simple file-sharing, chat persistency, mobile clients + web client, ability to pick server location, codecs, moderation tools...and the best feature in my opinion...their amazing changelogs popups.
Honestly security wise it might not be very clear, as per this article, where they stand today, I am still super stoked about every other aspect.