I am genuinely interested in opinions on this to support or abandon my study, draft report of which is published in my ResearchGate page.
Relative simultaneity is a landmark outcome of Special Theory of Relativity (STR). This seems to be interpreted as if relatively moving systems have their own temporal realities. This makes the concept the future and the past rather fuzzy. More importantly it seems that the abstract mathematical concept of space-time is elevated to the ontological level which allows to say that future and past equally exist thereby not ruling out the travel from one to another (whatever it means).
My studies indicate that relative simultaneity is only an apparent effect of clock synchronisation method by light signals.
This is not to say that STR presents a invalid view of the reality, but rather that its interpretations may be misguided.
Einstein clock synchronisation has effects similar to a certain degree to those after synchronising clocks using different criteria - according to the apparent angular positon of the sun (i.e. time zones on Earth).
One could transform classic mechanics equations where time becomes a linear function of longitude over a selected slice of the globe and have bizarre yet true descriptions of physical processes following Newtonian dynamics.