the article seems to be more tilted towards promoting the usage of credit cards. Because save and except credit cards, there is no other methodology/information about availability of loans at lesser rates.
Interest rates in Mortgage finance such as Home loan and loan against property has not relation with the credit score. The bank charges the interest rates as per there rate charts. Interest rates in home loans are non negotiable. Where as LAP rates can be negotiated depending upon the value. But unsecured loans such as Personal loans etc are at a higher rates but banks do have corporate tie ups where they give at lesser rate compare to the market. Cibil helps to see track of the previous and current credit history of the borrower. It dosen't mean that a person with Zero score will get loan at a higher rate than a person with credit score of 800 .