I’ve been worried about, and looking for, ADE with second infections or “breakthroughs” since the Fall of 2020, really not seeing it.
I’m equally concerned about mRNA vaccines driving the variants, which is realistic (but not yet proven) - but I think ADE like with dengue just hasn’t shown up.
It will be interesting to continue watching. If we do not have a worse outbreak this fall/winter, you may be correct about ADE.