Use a feature that doesn't really work, after so many years, hoping compilers will actually make it work if people use it - seems like a disastrous plan. People have tried to use modules, and have generally found that they fail, and have dumped them.

It's unlikely at this point modules in their current form will ever be anything but a legacy feature in C++. Maybe someday a new implementation will arise, just like noexcept replaced the failed "throws" declaration.