The next part of the quote (and the same number is used here in Sweden) is: "Only about half manage to achieve pregnancy after undone sterilization."
We can cure a whole lot of cancers. No one would go out and start proclaiming "cancers are curable!"
The myth is that "Vasectomies are reversible" - and it's actively used to claim men should perform vasectomies since "if they change their mind in the future they can just have it reversed".