I agree too, Just (and others) are better as a pure entry point. But when you come to projects that already have Makefiles, or you know you have just one less thing to install in a container... you use Make.
In the era of micro services and ephemeral computing runtime, the baseline default environment will save us from unnecessary complexity.
For example, in CI pipelines, I can use my own plain. Makefile to replace different yaml tasks across different languages, from shell scripts to python scripts to npm scripts.