To air in such a context would mean to bring out into the open, the way you take your laundry outside so that the air can dry it. However, it is often applied to ideas, problems, issues or complaints that someone wants to share openly. It may also be associated with the idiom "to air one's dirty laundry", meaning a public display of things that should be kept private, showing the world the flaws of your private life.TRANSITIVE VERB: 1. To expose so that air can dry, cool, or freshen; ventilate. 2. To give vent to publicly: airing my pet peeves. See synonyms at vent1. 3. To broadcast on television or radio: “The ad was submitted to CBS . . . which accepted and aired it” (New York).
In your example, someone thinks that talking publicly about the issues in question may be inapproprate diatribe. The author argues that, in fact, the problems should be acknowledged publicly.