Yeah, you do. Nobody has to ratify a ratification. Or would you have us believe that having ratified New York's ratification then New York needed to ratify the fact that Congress had ratified it? Which would require Congress to ratify New York's ratification of Congress' ratification of New York's ratification of the Constitution. And so on and so on and so on.
The New England states certainly thought states had the right to secede since they themselves threatened to do so.
And when did they actually try and secede? And how were they planning on going about it?
IF a reservation of the right to secede were a violation of or inconsistent with the constitution, others would have said something. If you are making a deal with someone and he makes claim to a condition you don’t agree with, and you then accept that agreement, you have accepted that term or condition. If you cannot accept that term or condition then you must not accept. In contract law, adding a term would be considered a counter offer.....one the offeree will be bound by if he accepts the agreement.
I did not say the New England states “tried” to secede. Their representatives were literally on the way to Washington DC when the war of 1812 ended.