ADE is a separate phenomenon from what happened with how virulent Marek’s became in chickens. Two separate and equally frightening issues.

(I am actually more afraid of ADE for those who have taken it, I do agree with you there.)

And the way they approached giving the vaccines, in the middle of a pandemic, where most still aren’t vaccinated and aren’t all get vaccinated at the same time, only allows the virus to learn the tricks to get around those who are vaccinated. (Like stopping antibiotics too early.). Usually they evolve naturally to be less virulent, but it’s a crap shoot when something like mRNA manipulation is mixed in with that evolution. (Look at all of the antibiotic-resistant bacteria’s out there currently- many evolved to not only be antibiotic resistant, but also to spread easier, and cause more damage. (Antibiotic resistant TB, Staph, UTI’s, C-Diff)

ADE makes some of your generic antibodies, the ones who can adapt to any disease they encounter and successfully fight it, it dampens/removes their unique ability. This because of the super antibodies (artificially created by the mRNA changes), which have only the ability to fight one specific thing. (The artificially induced antibodies take over, but they are only designed against one particular disease.). This is ADE and it is separate from the Marek’s scenario. (If I’m not mistaken, certain polio vaccines given in Africa caused the wild polio to become spread easier and are more virulent.)

When very young, and then going into the elderly years- the generic antibodies are not in production, and that is why they are susceptible to diseases others are not. The vaccine can cause even those normally capable of this antibody production, to no longer be able to produce it. Or, if they are produced, they go dormant due to the super antibodies created against one specific disease only.