What has that to do with anything I said? If you set a reference frame to the photon, moving at c, one of the 3 spatial dimensions collapses, due to length contraction in the direction of the photon’s travel. Of course it’s still possible to translate to any other reference frame with Lorentz transformations, but the fact remains that there are reference frames that depict the universe as 2-dimensional, which is not an accurate depiction of reality as we intuitively experience it. This highlights why “no preferred reference frame” is not the same as saying “all reference frames are equally valid ontologically”.
You can't - that's the point of my last two posts and the sources therein.