"Renegotiated NAFTA" is still NAFTA. rebranding is a Trump mainstay, call the trade agreement what you like, it is still a trade agreement.
Sure, now we call it USMCA.
The trade agreement often comes up for renegotiation, it came up for renegotiation, it was renegotiated, and passed into law again.
We still have a trade agreement with Canada and Mexico. If you want to argue that it has different terms, you would be right, because it has different terms every time we renegotiate the trade deal.
Trump happened to be around for the negotiation, and changed the name.