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"I've been reading here that a FICO score is generated after 6 months of credit history."
I too have read that here from time to time. Yet
"ECOA [Equal Credit Opportunity Act] Reg B provides every American with the Federally protected right to build a credit history and credit score simply by paying everyday accounts on time, such as cell phone bills, rent and utilities."
The Best Kept Secret in Lending, Bar None
What you have read about the 6 month period to generate a FICO score is correct, and it does not go against the ECOA at all.
What I don't recall reading here though is that you can build credit history without a credit card.
You can build credit history without a CC...and even without a FICO. Some lenders will look at alternative scoring methods when a FICO cannot be created. And there are some non-FICOs that take these alternative sources into consideration. So, his statement could be correct though it doesn't apply to FICO scoring.
There are always other alternatives. Just may be a little harder to accomplish.