Derivation of Lorentz transformation employs division by zero. It's not physics, it's nonsense.
Time and space are immaterial and cannot - by definition - possess physical properties like curvature, dilation, speed, etc…it's nonsensical gibberish talk. They are tools to help describe objects and motion and any endeavor which uses them outside of that purview is complete bullshit. Immaterial things cannot be the object of physics-based inquiry.
Move past this. It's not smart stuff, it's an attempt to fool you.