There's the old adage: If you can't beat 'em, join 'em! Let's take that seriously. It has always been much easier to imitate the semblance of meaning than it was to find the substantively meaningful. Things with only the semblance of meaning have always proliferated. Idle talk, children's rhymes, songs, music, myths... all of these have always proliferated. Why did they not drown out actual meaning?

I think the above is one of the key questions for the survival of humanity. A part of the answer is that there has never been a clear demarcation between the meaningful and meaningless. There is valuable information in the structure of myth, songs, and idle talk.

It is clear that something in human beings acts as an effective filter for meaning and value. It is also clear that rationality isn't the totality of whatever this is, though it might be a part of it.