Graphify-Labs/graphify is not dead; it's very much alive and actively maintained. Despite a swath of open issues, the project is consistently receiving updates, with its last commit made just today.
Given the recent activity, including frequent pushes and releases, Graphify is not a project you should avoid. Instead, it appears to be a reliable choice for those interested in turning codebases into queryable knowledge graphs.
Use Graphify if you need a well-supported tool for knowledge graph creation. Just be aware of its open issues which might impact your experience, depending on your specific needs.