It creates busywork and ongoing maintenance issues in writing an interpreter. E.g., https://pkg.go.dev/text/template https://pkg.go.dev/text/template requires e

It creates busywork and ongoing maintenance issues in writing an interpreter. E.g., https://pkg.go.dev/text/template https://pkg.go.dev/text/template requires every possible function to be manually registered, and that’s not a good use of time.