Of course, they are. Exploiting people with beneficial mutations that confer an advantage by other members of the species preferentially choosing them as mates doesn't make the mutations any less random, any more than people with detrimental mutations not having mates because they're disadvantaged in some way.
Babies are still being born with random detrimental mutations that result in them not maturing, sadly--though CRISPR was used to cure one such defect in a baby recently.
Doctors successfully rewrite a British toddler's DNA using CRISPR in a world-first treatment for a rare, life-threatening genetic liver disorder.
www.ibtimes.co.uk
Aside, this is frikken amazing.
After a discussion about this story on the radio this morning, there was an interview with a woman who had this (or a similar mutation) who passed it onto 2 children (who did not survive, sadly) but whose parents didn't carry the mutation. She also had previously had children who were apparently unaffected. It's totally fucking random, friend.