Elite physicists are also people. Would you say that, if exposed to your sequence, these physicists would come to see that they were mistaken in their rejection of MWI? If not, it seems that the most credible explanation of the fact that your sequence can persuade ordinary folk that elite physicists are wrong, but can't persuade elite physicists themselves, is that there is something wrong with your argument, which only elite physicists are competent enough to appreciate.

Elite physicists are easy to persuade in the abstract. You wait till the high status old people die.