Yes, 3/4 of the states must still ratify. I would just say this. There are two methods of creating an amendment, Congress and Convention, basically. None of the 27 amendments began with a convention.
So, in that regard, an Article V convention is not a cut and dried easy-peasy process, IMO.
It appears that we can not get an amendment via congress, so we must either give up, or try the more difficult route, the COS.
The opposition always plays the "runaway convention" card, banking on the ignorance of the public. It makes me wonder why we no longer have the Tulsa Ross type of US History teacher. She was a Junior High history teacher we all hated until we grew up. She was a great lady. If all our youth had teachers like her, politicians would live in fear of us, not the other way around.