Discord Hacked?
I think it's safe to assume that Discord wasn't actually "Hacked" unless we hear otherwise. Scraping web data isn't a "Hack" or breach- it's just compiling public data.
This morning, I had this shared with me:
All of Discord was hacked all chatlogs dumped
— 0HOUR (@0HOUR1__) September 17, 2025
2.1 B threads
Say his name
Charlie Kirk! pic.twitter.com/EZAz751VsB
Quite a tall claim. I can't speak to where or how this data was acquired, but I suspect this twitter user (0HOUR1_) may be embellishing things a bit. Just taking a look at the actual DarkForum post, it's worth noting that they claim it's "Scraped" data:

Which indicates that Discord's servers probably weren't actually breached. Adding onto this, there was also a suspiciously similar sized repository of discord messages released back in May, and I get the impression that this may just be a reposting of that data.

Alternatively, it's also possible that the dataset was "De-anonymized"- although I suspect that's not terribly likely- or that someone else managed to scrape a bunch of public servers in a similar manner to the researchers over at the Federal University of Minas Gerais in Brazil. I haven't seen the data myself, so I can't be sure of any of this.
Either way, I think it's safe to assume that Discord wasn't actually "Hacked" unless we hear otherwise. Scraping web data isn't a "Hack" or breach- it's just compiling public data.
As a side note, these types of claims don't help anything when they're unfounded or inaccurate. Claiming that "All of Discord was hacked" without any clear indications of anyone's servers getting breached creates fear where there doesn't need to be- and undermines the credibility of future "hacked" claims. Precise language around data breaches is important, and I'd admonish anyone who pulls stunts like this just to garner attention.