I'm not sure what claim you wish to be supported but in case it is the multiverse claim: here is a Wikipedia quote -
The physics community continues to fiercely debate the multiverse hypothesis. Prominent physicists disagree about whether the multiverse may exist, and whether it is even a legitimate topic of scientific inquiry.[2] Serious concerns have been raised about whether attempts to exempt the multiverse from experimental verification may erode public confidence in science and ultimately damage the nature of fundamental physics. [3] Some have argued that the multiverse question is philosophical rather than scientific because it lacks falsifiability; the ability to disprove a theory by means of scientific experiment has always been part of the accepted scientific method. [4] Paul Steinhardt has famously argued that no experiment can rule out a theory if it provides for all possible outcomes.[5]
Supporters of one of the multiverse hypotheses include Stephen Hawking,[6] Brian Greene,[7][8] Max Tegmark,[9] Alan Guth,[10] Andrei Linde,[11] Michio Kaku,[12] David Deutsch,[13] Leonard Susskind,[14] Raj Pathria,[15] Alexander Vilenkin,[16] Laura Mersini-Houghton,[17][18] Neil deGrasse Tyson[19] and Sean Carroll.[20]