@LoganMaingi yes I just wanted to point out the desolate situation on Physics SE we both know I guess, and the new higher level physics site (outside SE) is work in progress, I hope we will go online early next year. I did by no means want to overreach my position and presume the MO community should chance any rules. Though sometimes I wish out of desparation that advanced theoretical physics content could apply for asylum at a better more friendly and welcoming place not dominated by bad political overmoderation somewhere, until our new site is running...

@LoganMaingi maybe you have noted this: Physics SE still closes any reference-request (reference-request defined as any researcher or advanced student would naturally use that term conversely to the strange way too restrictive definition of that tag on Physics SE) in particular about advanced theoretical topics immediately, even though this should no longer happen due to the new so-called "books or recommendation policy" they have. But it still does happen. So editing that question over there would be completely pointless, reference questions about advanced topics are simply not tolerated.

Thanks for these nice clarifications, they are very helpful.

@CarloBeenakker thanks for your concerns ... However, my hope is that as I have seen technical theoretical physics questions (such as about string-theory for example here, here, here, etc ... ) can find immensely nice answers on this site, that I will be lucky too. Even if it may take its time.

@DoubleJay here is a very enjoyable and possibly related quantum gravity discussion explaining that a well defined notion of geometry (and with it gravity too?) "emerges" only from very high energy scale where geometry and all physical phenomena are indistinguishable, when going to larger scales.

I reposted this question here because it got absolutely no attention on Physics SE, as you can see here. If this is inappropriate, please just tell me and there will be no problem for me to delete it ...