Of the accounts impacted globally, we have identified approximately 70,000 users that may have had government-ID photos exposed, which our vendor used to review age-related appeals.
So they only demand your ID if they’ve somehow decided that you’re underage and you want to appeal that.
I don’t remember discord requiring ID, at least in the US. Not that is any better, just didn’t realize ID was required anywhere.
From https://www.theverge.com/news/797051/discord-government-ids-leaked-data-breach :
So they only demand your ID if they’ve somehow decided that you’re underage and you want to appeal that.