QED with Self-Interaction vs RealQM vs Resonance

Quantum Electro Dynamics QED underlying the Standard Model of atom physics, while presented as the most successful scientific theory ever, comes along with a concept of self-interaction stating that an electron can interact with itself through emission and absorption of photons, more precisely virtual photons as a form of "ghost particles" without physical presence expressed symbolically in Feynman diagrams of the form: 

supposed to describe an electron emitting a photon to the left and absorbing it again to the right after a short detour. Very illuminating. Compare with this video and: 

 

But self-interaction can drive a system by instability into infinite energy blowup and this is what happens in QED, which to survive has to be subject to renormalisation cancelling infinities. 

QED thus first introduces self-interaction and then cancels its effect by renormalisation, and by Ockham it would seem to be better to eliminate self interaction from the theory. Selling QED as "most successful theory ever" may be seen as form of self-promotion into infinity.

RealQM presents a quantum theory based on electrons with physical identities without self-interaction. 

As an elementary particle an electron cannot suffer from hazardous self-interaction, but a system can be subject to a form of system self-interaction in the form of resonance with different components of the system interacting with each other. This is the nature of a mass-spring harmonic oscillator, where the energy swings back and forth between kinetic and potential energy, as a form of stable resonance, captured in the equation

• $\frac{dx}{dt} = ax$   

with $a=i$ imaginary. We may compare with a blow-up to infinity if $a=1$, and decay to zero if $a=-1$ in a chemical reaction system. In both cases the two terms in the equation represent different physics. A configuration with only one component is not system and supplying it with self-interaction is contradictory physics which cannot exist over time.  

Compare with previous posts and recall Feynman's frank confession: 

• What I am going to tell you about is what we teach our physics students in the third or fourth year of graduate school... It is my task to convince you not to turn away because you don't understand it. You see my physics students don't understand it... That is because I don't understand it. Nobody does.