She's right -- there never was a working counter on any of the actual props in the movie. All it did was light up (and maybe not even that). The "counter" we all see was a filmed insert, all edited together with movie magic.
True geeks will note that whenever we see the hero PR with the counter visible on it in the film, it always reads "42," seeming to indicate that this hero had a static counter.
This hero PR has been presumed to be in Cameron's private collection. All of the other hero PRs DO NOT have counters, some of them even lacking the little window where the counter would be.
The HCG prop seems to be more accurate to the actual prop versus the "hero" models that we have which are really idealized versions of a screen-used prop that is not nearly as functional or clean as the excellent replicas.