Still makes no solid reasons.
1. If you're the owner of the game, you will hold them slots.
2. Even if game will show delayed a bit, doesn't mean it will get filled by the time your friends see it.. What's the rush ? why do they have to be there asap ; and then wait together with you another 10min for lobby to fill ?
3. They could still use their puberty issue, and type
"P/pastmistake | 123" since that's the first name given when creating the lobby.
Seems like a foolish pretext. And I don;t see any valid/worrying downsides of using my suggestion.