The point is that even if we hold that the earth is a globe, various mainstream experiments, and even space experiments, have a hard time finding violations with the Equivalence Principle.
Therefore you guys can't really tell us that the Equivalence Principle only applies locally in a very small container.
Your lack of the ability to use simple logic is showing again.
EP roughly states that in a windowless room, without any other point of reference, an observer cannot distinguish upward acceleration from gravity.
Your logic is that since all experiments confirm the EP, what the EP specifically states is false. Yeah, that makes total sense.
It might be true that even with an outside point of reference, an observer can’t tell the difference. But that wouldn’t be the EP and I don’t think there has been any experiments that suggest its true and simple experiments involving tidal forces disprove it.
I can’t access the link you provided. I don’t know if it is the link or my computer, but I don’t know where you get the idea that time dilation suggests that gravity doesn’t exist. The opposite is true. Time slows down in stronger gravitational fields. How would upward acceleration cause that?