The younger brother "Theoretical Physics Stack Exchange" will abolished in a week or so,
due to the low traffic figures and a general shortage of interest. The overall administrators are able to easily migrate all questions from the defunct Theoretical Physics SE site to Physics SE site but they think it could be viewed as an impolite step because the questions from a differently focused site could be viewed as "intruders".
I personally believe that when it comes to the quality and the degree of relevance, pretty much all questions on the Theoretical Physics SE website are "enough" for Physics SE. Do the moderators of Physics SE agree with me? If they do, could you please agree about some common position, and if you happen to agree with me that the 413 Theoretical Physics SE questions should be uniformly saved and given asylum on Physics SE, could you please go to the page above and inform the meta-moderators of Stack Exchange that you consider the Theoretical Physics SE questions on the exodus to be welcome at Physics SE?
I really believe that there are many questions and answers whose value is vastly higher than those at Physics SE and they could be lost which would be unfortunate.