Hamilton was speaking to citizens of New York who admired their own state constitution. What was he speaking about?

Hamilton begins Federalist Paper 84 by acknowledging that there are some objections to the Constitution that have not yet been discussed. The most important of the remaining objections is that the Constitution does not contain a bill of rights. It has already been pointed out that several state constitutions do not contain bills of rights, including New York State. Oddly, New York citizens who oppose the federal constitution on the grounds that it does not contain a bill of rights have tremendous admiration for their state constitution. These citizens claim that the state constitution doesn't need a separate bill of rights because the guarantee of individual rights is written into the constitution itself. The same is true of the federal constitution.