I have bees myself. Beekeepers and scientists all over the world are trying to breed better bees with improved VSH. While it may work in a laboratory, it does not seem to work consistently in practice. You cannot just buy a "VSH colony/queen" and no longer treat Varroa mites. Even with careful breeding, the VSH behavior often vanishes (or is greatly reduced) after 1-2 generations.

Of course having only colonies with a strong VSH would be the end goal so we no longer need to treat our bees. But until then, better treatments are needed.

    > Even with careful breeding, the VSH behavior often vanishes (or is greatly reduced) after 1-2 generations.

As far as I know VSH is suppressed when you take away the honey. Taking away the honey puts the colony in constant food stress, which suppresses reproductive work.