Another commenter summed up my feelings on PL/SQL. It's not that it's inherently bad, it's the bad practices that seem to follow.

Modernization to me (specifically in the context of the GC) means refactoring/rewriting systems to follow modern industry standards and practices. Things like proper version control, automated testing, automated/semi-automated deployments, and monitoring and logging.

I think there are major benefits in adopting these practices for both the Canadian public and the developers building/maintaining the solutions. Unfortunately, getting a budget to move the source code from a shared network drive to Git is next to impossible. And God forbid you want to spend time adding any sort of testing.