Personally, I see no use for this bell since in Austria bicycles share the road space with cars, trucks and trams rather than pedestrians, which could be more dangerous, and what I would need is a bicycle bell that could penetrate car enclosures so that drivers would get off their phones and pay attention to the stuff around them.
Yes, I know, ideally there should be dedicated cycle lanes only for bicycles but nothing in life is ever ideal, and the city isn't gonna do that anytime soon since that would mean completely eliminating car traffic on the narrow streets, witch would be political suicide, so a bell would be an instant life saver.
The OP seemed to suggest that people wearing ANC headgear should stop doing so, but both the bell and the ANC-wearing pedestrians are a non-issue in my lived experience.
It would be a shame if these "cyclist-pedestrian ANC-wars" distract from the real issue, that cyclists are not, but should be, a fully emancipated participant in traffic and infrastructure should be designed with cars (to a degree), bicyclists AND pedestrians in mind.