Trying to apply string theory(ST) to our universe (anthropic approach) leads to inconsistencies where ST does not yield any dark matter. Well, dark matter appeared due to an error in cosmology where gravito-magnectic forces were ignored. When these forces are considered, there is no need for dark matter to explain the galactic rotation curves, e.g., Ludwig, 2021*.

Suppose one makes an error in a given calculation, using a certain theory. Suppose this error leads one to believing in the existence of strange objects, which explain the discrepancy between calculation errors and observation. Then, when a competing theory appears, it is required of it that the strange objects are explained, as a proof of it’s validity! The new theory was not created: it was discovered by accident.

No. Do not press dark matter onto String Theory. On the other hand, however, in the atomic realm there may be the same kind of error committed in gravitation: ALL central forces must present the magnetic style component. In the same way as the magnetic field originates from the four dimensional potential of the electric field, so does the gravito-magnetic force from the analogous 4-D gravitational potential. And this will occur for any central force. Consider the huge number of ‘adjusted’ constants in the Standard Model? Maybe some of these constants might come from this correction.

(*) Eur. Phys. J. C
(2021) 81:186
https://doi.org/10.1140/epjc/s10052-021-08967-3