I did get a 5th upgrade one run, so that perhaps is working, it just wasn’t clear when I read the description that is how it is supposed to work.
Although after I moved points out of glphy urn and into whisper urn, the maxed out whisper urn (100%) on some whisper turn-ins gave me 3 normal choices, no orange/ancestral choice, unless there is some other non-obvious way that one is supposed to work.