I'm not inventing anything. As I showed.
You showed that it needs a DM ruling to invent what happens if you try to teleport into an antimagic field. I don't, I just apply the simple rule from antimagic field that says that the teleportation fails if the destination is
IN the sphere.
Spells that target use the word target in their description. Teleport doesn't target.
Why? The planar set up is not what it was in 1e or 2e. The astral is connected to the ethereal and vice versa.
Uh no, where does this come from ? "The Ethereal Plane is a misty, fog-bound dimension that is sometimes described as a great ocean. Its shores, called the Border Ethereal, overlap the Material Plane and the Inner Planes." So no outer planes there, for example and certainly no astral plane.
And on the diagram, they certainly don't touch each other by far:
You can travel from one to the other through color pools from the astral plane. Nothing says teleport can't access one or both whether on the prime material, inner or outer plane.
Oh, so now you require not only one transitive plane, but two transitive planes to be able to teleport, and to go through color pools in addition. But still, for some reason, teleport only allows oyu to teleport within one plane. How complicated do you need to make it to work ?
As for me, it works in any cosmology, as described, you just move from one spot to another, in your dimension (hence dimension door), and don't visit others in passing when they are not mentioned. Spells in 5e only do what they say they do...