There is an entire sub-field of experimental science that involves putting ever larger objects in superpositions of different locations. These experiments are n

There is an entire sub-field of experimental science that involves putting ever larger objects in superpositions of different locations. These experiments are no closer to testing quantum gravity, but they falsify whatever it is you're trying to say here. See https://www.nature.com/articles/srep13884 https://www.nature.com/articles/srep13884 for a random example.