I have found this definition of natural selection.
"Evolution acts through natural selection whereby reproductive and genetic qualities that prove advantageous to survival prevail into future generations."
Mechanisms of Evolutionary Change | Nectunt
This is survival of the fittest that has been described as tautologous because it means that anything that survives is defined as fit.
But this led making a value judgement about traits which had a negative social effect. And so people decided which traits they thought were being or would be selected.
But anything that survives is being selected. As soon as something dies without having offspring it is deselected, trivially so.
There is no trait that can't easily be made extinct. Why a trait survives is down to the properties it was freely given by biochemistry.
Natural selection seems entirely negative. It implies nature is deselecting bad traits. But all it seems to be is banal observation that somethings survive and somethings don't.
When you start giving a hierarchy of desirable traits or reductive explanations we've seen where that leads.
I am exclusively gay and that has led to the puzzle of how this ruthless mechanism wouldn't have weeded that out. That is a teleological standpoint like we knew the mind of nature and can describe what it wants to create.
Then there is issue of what was selected as opposed to what is a spandrel. A Spandrel is certainly any easy way for any unevolutionary trait to get a free ride.