It's not about the username being taken, it's all about what people appear as in the client; bots and scammers might impersonate Clyde to steal credentials, social engineer, etc, so you cannot be "Clyde_help" nor "Clyde_Official" nor any variation that would make people think the bot/user is speaking on behalf of Discord.
Why not just put a special logo or symbol or something on that profile to mark it as special/official, or have some sort of "user type" displayed that says "human" or "official bot" or "third party bot"? I feel like making it look like a regular username makes it _more_ likely people will be scammed by "other" regular users rather than less likely.
Discord already does this - they just don't trust average users to be aware enough to check. (Based on my experience moderating some discords, they aren't wrong.)
Which is funny when you take into account that people are still using special characters to get a Clyde name that mostly resembles it. I question the effectiveness.
