It's not that either system is a problem, the problem is changing randomly after hundreds of millions of users have signed up, and probably gotten used to their

It's not that either system is a problem, the problem is changing randomly after hundreds of millions of users have signed up, and probably gotten used to their username. On my friends server everyone changes their server name a few times per week (for whatever quote or joke is topical), and it's the discord handle we use to @ each other, and the discriminator isn't important. But now I'm sure many of us will need to change our discord username.