Some are true some are fake.
Harvesting chi in ur body isn't just by discussion or a few seminars/lecturing could describe.
Westerners enjoys picking on chinese traditions and tries to make findings to prove it's fake.
When they are unable to proof it or give a result, they simply snap it with their theory and some flashy words.
Modern folks like us wont be able to do that.
It take years of hardship and must be practise at very young age.