Don’t need the Ord instance for equality, just Eq is sufficient. Ord is for inequalities.
The point of the post is that most mainstream languages don’t provide a way to automatically derive point-wise equality by value, even though it’s pervasively used everywhere. They instead need IDEs to generate the boilerplate rather than the compiler handling it.
Reviewers are not infallible and are largely focused on the meat of the MR rather than every single detail.
It reflects much more poorly on you than it does on them.