After IWYU, the codebase is loaded with files that include log.h and also include private logv2 headers that are meant to be exported by the main log.h public header.

These includes are redundant and should be removed, so that the logv2 library presents a simple interface for the majority of users.

Now that I have a script to perform this kind of operation (for SERVER-100575), it's easily doable.
https://github.com/10gen/employees/blob/master/home/billy.donahue/remove_private_includes_logv2.py