Lazy writing at nature.com

Did anyone review the second sentence below (in the write-up of an article published in Nature) before clicking the button, just to see if it made any sense? —

Self-destructive behaviour is common among the sterile worker castes of eusocial insects such as termites and honeybees. The workers forego reproduction, so they are free to evolve altruistic behaviours that benefit the colony as a whole rather than themselves as individuals.

I am sure that the writer knows perfectly well what she means, but she clearly hasn't written what she knows.