Is delayed magnetization really a thing?

[broli]

A lot of people and experimenters in the past have claimed that delayed magnetization is what powers their devices or experiments. Most notably JNaudin showed a while ago a good example of this:

http://jnaudin.free.fr/dlenz/DLE21en.htm
http://jnaudin.free.fr/dlenz/DLE22en.htm

Did anyone else explore this effect? Especially his DLE22 experiment seems to be very unusual. It's like there are nodes in the transformer core where the flux goes to zero.

[F6FLT]

The magnetic field of the coil polarizes the magnetic domains of the ferromagnetic mass, thus exerting a torque on the electrons of this core, via their spin, whose "counter torque" on the electrons of the circuit will oppose their current.

This means that Lenz's law applies locally between the electrons of the magnetic domains and those of the electric circuit. It is the magnetization energy, integral of the energy density 1/2*B²/µ on the volume of the ferromagnetic mass.

Delay or not, Lenz's law applies step by step between the electrons of the primary circuit, those of the ferromagnetic mass, and those of a possible distant secondary circuit. So this delay is certainly not a valid idea to eliminate it, which is impossible since the effect between charges is reciprocal, consequence of Coulomb's law.
Naudin was careful to specify that "the use of a soft iron laminated core significantly reduces the hysteresis losses and the eddy currents", which eliminates the consequences of Lenz's law leading to these losses, but the alignment of the magnetic domains is also subordinated to Lenz's law, which he seems to have forgotten (otherwise we would not need energy to magnetize a mass).