Am I misreading this? Your link seems to verify the claim of the person you are responding to. Only 19% support legal abortion in all cases without exceptions.
You've now retreated to an argument that no one was making.
Ultimately though, what matters is how many approve of Roe being overturned, which is a binary, and those who oppose Roe V. Wade are in a very clear cut minority.
> what matters is how many approve of Roe being overturned
Exceptionally few people understand exactly what the implications of Roe are so this framing is useless.
I'd like to hear why you think this. It's only a "useless" framing if you don't buy into the concept of democracy.