The money Rs 50K for trading is total affordable risk capital, so the capital may be 50L or 100L so that he has power to trade with 1% daily.
With cover orders and 20 times leverage, earning 1.5 lakh average pm with maximum leverage can compress the required "working capital" (50K) and make it a fraction of the actual trading capital (10L).
That would make it a reasonable 15% per month return on trading capital.
Many traders however may fail to understand that and may start to act recklessly watching such apparent 200% returns per month.
Both Zerodha and the trader should mention explicitly that this is only a portion of their actual trading capital. What some traders would like to refer to as "working capital".
Without that, the interview itself becomes a mere sensation rather than a guiding voice.
All of the Market Wizard interviews and even the book by Alexander Elder called "Entries and Exits" which is a series of interviews of profitable traders measure returns as a percent of the "trading capital" as opposed to just the "working capital" with the broker.