“Um, wrong. If there is no inertia mass then regardless of how fast it travels it does not accumulate more mass.”
That is also an irrelevant point, because even something with zero mass cannot travel faster than c.
“Quantum non-locality works out that two connected/related/intertwined particles can communicate instantly regardless of distance between them.”
No, quantum non-locality explicitly does not allow FTL communication. It involves, as Einstein famously noted “action at a distance”, but that action does not pass any usable information, so it doesn’t help you in your quest to violate relativity.
“There is only one way I can think of for this to be so...”
This sums up the problem right here. Just because you can’t think of another way, you assume things must be the way you think they are, but you are mistaken on quite a few points.
Put another way for thought, Jesus stepped from one where/when into our where/when then out again. He did not cease to be spatially and temporally, He just ceased being perceived in our spacetime. So, there is indication that different spatio-temporal coordinates do exist which you and I are not equipped to sense. That doesn't mean we may never find a way to sense this other spatio-temporal reality. And since we presently have no well organized conceptualization of this other spatio-temporal coordinate system we ought not make assertions like you make setting "c" as a limit.
Information is mediated by the spatio-temporal coordinate system of our perception via electromagnetic properties we are designed to sense. This design appears to limit our sensing absed upon photon characteristics. But if we do not have all the characteristics of how photons may impact other spatio-temporal coordinate systems then we have something about time yet to be understood, as the temporal nature of the greater Universe exists. Said another way, membranes of different spatio-temporal coordinates may in fact be unsensed by our mechanism but yet exist as real as our coordinate system. These other coordinate systems will have spatial and temporal qualities. To impose the 'limit' system (photon mediated electromagnetic information) of our sensory perception upon the other system(s) is rather closed minded.
The Bible in fact contains many scenes which indicate (if you believe the Bible) there exists at least one and perhaps many different spatio-temporal coordinate systems which are as real as ours and from which someone has come and gone and come again. But that would just bore someone such as yourself. The