There is a bothering aspect in the present search for the theory of everything.
There are precepts on how the theory should look like.
Unseeming comments like the claim that String Theory is a theory from the 23rd Century (thus should be correct) are not scientific. It delegates all other
attempts to second best just by using that empty statement.
I see the big picture although I might fail to see the details. The big picture is that superstrings are supposed to replicate energy levels (mass) of particles and the different types of bosons that convey the so called Forces. The problem is that SuperSring boundary conditions create evenly spaced energy levels (the length of the string is a multiple of the wavelength associated with an specific state). All the contortions of creation of Tori, folding the space in membranes etc are used to try to compresses those strings into submission to yield the observed particles and bosons.
The fact that the superstring is supposed to be extremely small means that there will be a lot of trouble to make matter out of them (to find states that are low enough to accommodate the observed particles' masses).