Most probably the case Ben. most probably...
One of the reasons for persisting with SRT issues is that years ago a physics and maths professor form Russia was given the task of calculating the issue of non-simultaneity and how this would effect collisions on a moving object.
Half way through his task he was very upset with his conclusions having been a proponent of SRT for most of his working life. He then withdrew from the task with out further word.
The gendanken was using the orbit of Jupiter as the moving target and have three comets traveling at different speeds for over 20million years and how these commets could possibly collide with jupiter in orbit around our sun.
The issue of simultaneity is whether the distance between world time lines of relative v reference frames continues to grow according to time relative to each other.
The scientist in question probably discovered that due to galactic rotation one of the comets would not even come close to Jupiter yet suffer a collision with it.
If we have two ships moving at significant relative v how fast does the separation between world time lines grow?
And if from 29 billion years ago relative v RF have existed how can we make any sense of our universe at all given that after 29 billion years the universe would be indescernable or at least very different to each obeserver...?
So it seems that to prove SRT Invalid one has to do the complex maths required as our physics prof attempted to do...push the theory to the extremes and provide your conclusions. As I do not have the sophisticated math required to do the task I have to leave that to someone else who can. If ever they want to spend that sort of time and energy.