but theorized since years by Professor Mayer and backed by gravitation specialists.
yes, the univers is four dimensional.
no, it is not an onion.
The filament technology is not yet out in the public area, but from what I understand, as a gravitation scientist’s stand point, is that this filament allow any ship to find it’s way to the nearest gravitational maelstrom, publicly known as abyssal deadspace.
So you are no more “leaving this plane” than when you use a WH (either in a stargate or natural one)
If you hear this kind of thing I could only recommend consulting a legally certified and trained medical doctor.
Of course if you have question of a scientific nature, please do ask, but I will not answer ones about religious beliefs.