Well, that's my point. I see some JSON screenshots with highlighting, but nothing really that corresponds with what my own brown- and grayfield experience leads me to look for, and not really anything very persuasive toward the interpretability of what is on offer, so that I can evaluate the quality of the tool's "judgment." But I suppose that just goes to clarify the case for the redesign you mentioned!
Not that you're asking, but what would really convince me would be being able to point a cut-down version of the tool, presumably in a BYOAPI fashion, at one of my own old stale repos like https://github.com/aaron-em/same-encoder, and see what kind of a modernization plan it comes up with and how that compares with my own. A toy problem to be sure, but what better field for evaluation? Think of it like a take-home interview, perhaps.