not brave enough to say what you mean directly and honestly.
Strangely enough, although we are getting more mealy-mouthed about mental and physical disabilities, we are increasingly frank about bodily functions.
mealy-mouthed
Hesitant or unwilling to state something bluntly and directly when speaking, especially facts or opinions that are considered divisive or controversial. Everyone keeps having these mealy-mouthed conversations about crime in poor areas of the city, unwilling to talk about the scumbags who are to blame.