I suppose parent is mainly thinking of issues grouped under the term "culture wars". Another, more urgent issue, is indicated by this quote in TFA:

And throughout five years of war, during two or three of which we were fighting for national survival, countless books, pamphlets and articles advocating a compromise peace have been published without interference. More, they have been published without exciting much disapproval. So long as the prestige of the USSR is not involved, the principle of free speech has been reasonably well upheld.