At least for me a common use case for org-wide code searches is to answer questions like "is the library x still used somewhere?"
To not have this include old potentially low-traffic repos is a very bad thing. I don't understand why they would do this for enterprise customers. Like we would pay extra to not have it be this way.
[1] https://github.blog/changelog/2020-12-17-changes-to-code-sea...