Honestly, at this point I think they mean exactly what we think they mean and that any “different interpretation” is just people who disagree with the GDC’s answer. That isn’t how it works, though - disagree or not, refs have to follow what is stated. It seems clear that the GDC is saying that if a cube goes over the line you lose the auton, whether the other team has even moved or not.
Direct quote from q&a:
Interaction with foam tiles, regardless of whether it affects a Robot’s autonomous routine or not, is always considered a violation of SG2. As you quoted, all violations of SG2 result in the Autonomous Bonus being awarded to the opposing Alliance.