Investing in Mutual Funds is CRAZY

Did you know that if you start with investing 90K INR Each Month and step up your sip with 10% every 2 years, assuming 12% returns You’d have over 30CR in 2040?

Now obviously you can consider inflation but still if you take out 4% of 30CR each year you would have 1.2CR Each Year i.e. ~10 Lakhs INR every month!

Like what even lol.. Is there a catch for this ?