Here’s how it works:
🔴Invite high-potential players
It will be better to lure and entice these high-potential players than to invite them.
It is true what you said but it remains as a possibility that might work for some users who have a lot of connections and interactions with these people who could give a shot and progress.
I don't see a problem with running such a promotion, how many people will join at the end will be the condition to run something similar or to find other ways.