Fusion Power, to whom you have been so obnoxious, in fact has what I consider a correct take on this. My comment was in relation to the effect of breeding by humans over the last 40 years. As Fusion Power correctly pointed out, pressure from varroa is a lot more all encompassing than what humans can achieve.
Personally though I would take this one further. I still do not think the huiman attempts at breeding mite resistance have achieved much. The best run breeding programs include such as the US VSH program. It is possible that feral (not influenced by man) bees, have achieved more than human run programs. Much of this “breeding” has not been true breeding. It is that of the wide array of lineages that exist in the US, the presence of mites has reduced some and brought others to the fore. That’s all.
The member you refer to as “Chestnut” said that bees have established a breeding mechanisim to ensure stability across millions of years. He speaks the truth, bees, more than nearly any other animal, have. Take mites away and see what happens within a few years. It’s because they have been around a long time. We do not know if Mellifera have already dealt with mite plagues in the past. But mites have not been nor will be the only threat they face and they have within themselves the technology as a species to deal with them. Which is why for me anyway, I take a more holistic view than an obsession with mites and mites alone.