Here (Netherlands) basically all our family and friends app groups moved to Signal. Only some groups with parents of the kids’ school class, or colleagues, stubbornly keep clinged to whatsapp. For most cases, some negative news items about whatsapp/Meta/zuckerberg with regards to privacy and/or Zuckerbergs Trump-fetisjism, created enough momentum to move at least half of the group to another app (signal in this case). Afterwards, FOMO usually does the job in getting the other people over as well.