Just unintended consequences.
We still selected the survivors.
Also the bed bugs are still bed bugs.. They aren’t on their way to being giraffes.
Different traits among the species isn’t a new species.
Humans come in a variety of hues.. pinks, browns and sallows...They are still humans.. The genetics regulate the outward appearance.
Just a different trait in the same bug.
That’s how evolution works, it’s the unintended consequences of the hunt. Survivors pass on their traits, the dead don’t, hunters always “select” the survivors that way and the survivors evolve.
As for all that other stuff, nobody said nothing about any of that. Time for you to stop obsessing.
Who says?
I, for one, would LOVE bed-giraffes.