I'm sure they meant 1978, when the Implosion happened and the number of titles per month was severely cut. Around this time in 1978 there were about twenty-five titles per month against about thirty-five titles per month in the year before. It took a few years for them to get back up to the thirty-five number.
Even with the current cuts, I don't think their total output per month is that low--when you include all the collected editions and such.
But at least the cuts in 1978 were evenly distributed. A Batman title got cut, a couple of war titles, a few other super-hero titles. But they continued to produce other war titles, horrors, westerns. The sad thing is VIXEN never got published--meaning it would be decades before another black female super-hero got her own ongoing title.