Martial arts is mid-way through a huge rework that removes the old silly “martial arts are an item” thing. Not all of the old martial arts have been reimplemented into the current game yet, which is why those particular traits are still missing. As for them not doing anything, don’t worry, they do do things; it’s just that currently the descriptions for said martial arts traits haven’t been reimplemented to be displayed properly. If you look on the right side you will see the name of your currently equipped martial art in blue.