Do you have a companion tool whose purpose is to convince Excel devotees that modern, domain-specific tooling exists, and that they should stop pushing Excel because it's terrible for many tasks?
My problem is less that no tools exist to manage things outside of spreadsheets, but more that older management tends to take the position of "Jira (or whatever) is complicated and I already know Excel, and I'm in charge so we're using whatever doesn't require me to learn something new".
The problem with domain specific tools for project management is that everyone has slightly different goal, priorities and requirements. So you end up with a mess of a tool that barely works (Jira) or one that's missing necessary features. Then someone decides they could do it faster and better in Excel.