It's a resonably sensible change. I wouldn't be surprised if they extend it to images etc (on a longer timescale) as I keep seeing people hosting images off discord...
Half the time when I click an image link hosted on Discord, it turns out to be a dead link. I hope this new policy will help make them dead-er so people can finally stop using them. Discord isn't Imgur, Jesus.
I guess so, it depends how they are treating them though. Image files (probably) are not being used to distribute malware and are going to create a lot more dead links.
Is this change live? We could probably test it. (Re read the article - not yet)