TLDR: Veritasium is wrong and misleading, current actually flows in wires and is the main way energy is transported from source to the consumer, energy does not generally flow in the space "between" the wires.
Yes, very long wires behave like capacitors/antennas and transmit a certain amount of transient power instantly by coupling, but most useful energy is transferred after the speed of light delay, when steady state is achieved.
Nonetheless, by carefully selecting the AC frequency and the physical configuration of the lines, you can create a situation where most energy is transferred nearly instantly by the electromagnetic field and the far ends of the line are more or less irrelevant. So you obtain the Veritasium effect, but it's a very particular arrangement, not the general case.
Yes, very long wires behave like capacitors/antennas and transmit a certain amount of transient power instantly by coupling, but most useful energy is transferred after the speed of light delay, when steady state is achieved.
Nonetheless, by carefully selecting the AC frequency and the physical configuration of the lines, you can create a situation where most energy is transferred nearly instantly by the electromagnetic field and the far ends of the line are more or less irrelevant. So you obtain the Veritasium effect, but it's a very particular arrangement, not the general case.