Regarding Q3, I don’t understand what’s wrong with the observation that we checked the Born rule by doing repeated experiments and just QM without the Born rule predicts (by doing inner product) that after doing repeated experiments amplitude in all regions that contradict Born statistic tends to zero. That way we get consistent world picture where all what’s really happens is amplitude decrease and following Born rule is just arbitrary preference.
Regarding Q3, I don’t understand what’s wrong with the observation that we checked the Born rule by doing repeated experiments and just QM without the Born rule predicts (by doing inner product) that after doing repeated experiments amplitude in all regions that contradict Born statistic tends to zero. That way we get consistent world picture where all what’s really happens is amplitude decrease and following Born rule is just arbitrary preference.