Driver's query regarding MF's and overvaluation

A driver asked me if investing in mutual funds was a great way to make money, given that interest rates for government saving schemes were on the decline, after reading an article about them in
Ananda Vikatan.
I wonder if this is a classic pointer to the overvaluation of the markets or whether we should look out for a query of a chauffer in NY or London asking about the Indian markets, as it is the FII which are driving up valuations!