Kind of like IRC? Which is basically what Discord is. Why would you assume anything you put on the internet isn't part of the permanent public record? (Wait until you find out about mailing lists, Reddit mirrors, the Internet Archive, ...)
(Aside: The only halfway sane solution to this is having separate disconnected identities for each service you use and cycling them semi-regularly so you don't need to worry too much about small identifying details being aggregated.)
One, Discord is still primarily used by underage people.
Two, most Discord guilds are not public, this was a case of malicious bots. If you install an app on your phone, is your expectation automatically that it will skirt all App Store rules and dump the contents of your phone on the internet? I hate people that obsessively archive everything, but even I can see the case for IRC being expected to be public. Especially without SSL enforcement on a channel. Discord does not work like that at all. You are advocating for a treasure trove for the likes of Kiwifarms. (Which is exactly how dis.cool ended up being used, as a stalking tool)
Three, the people who say “every litte piece of info on the internet becomes part of the public record, be careful” are also the ones doing the archiving. Nobody else cares enough. Stop doing it. Not everything is worth preserving only because you are a data hoarder. I’m happy you think you’re building the library of alexandria, just make sure it’s not built out of piles of shit and PII.
If it was technically feasible to permanently record every public place outside the internet and make the recordings available to everyone, would you be in favor of that too? Just because the internet makes that technically feasible doesn't mean it's a good idea.
Many of them, perhaps. Certainly not all of them. That's irrelevant because there are a great many more who aren't necessarily saying much of anything but are logging everything. There are clear business and governmental (ie surveillance) use cases for such data so it's more or less guaranteed to happen en masse.
> most Discord guilds are not public, this was a case of malicious bots
Apologies, I don't actually use Discord and (based on this and a few other comments here) have realized that the term "bot" is being used in a very nonstandard manner. It seems that Discord "bots" are server side apps that can be launched (ie used) by other people. Using such bots to scrape private channels that the author doesn't otherwise have access to is indeed highly malicious and not to be expected or tolerated. (Of course one could wonder why such bots were permitted unrestricted communication with the outside world in the first place. Does Discord lack even a basic permission system?!)
Still, if you choose to run unverified code provided by an unknown party you should fully expect to be exploited to the maximum extent possible. It's really no different than installing arbitrary browser extensions or running arbitrary binaries that you found on the internet.