There may have been some issues with the original full title. Just as well it's not used today, there'd probably be protests from the cancel mob trying to stop it being sold on amazon etc..
The Origin of Species by means of Natural Selection or the Preservation of "Favoured Races" in the Struggle for Life”.
Since Darwin really tried to avoid talking about humans in
The Origin, what do you suppose 'race' meant in that context?
For that matter, since evolutionary theory is treated as an atheistic idea by so many critics, what would you think 'favoured' was supposed to mean?