Only if you assume that everyone claiming this is _correct_, or more specifically that they're incorrect when they're young and correct when they're old (this is usually something primarily claimed by old people).

Cato the Elder used to moan about this a lot. Society is clearly better now by any conceivable measure in any developed country than it was in his day.

Just because it seems to fall, doesn't mean it's actually falling.

The Shepard tone is an auditory illusion where the tone seems to be continually rising or falling in pitch.

I've seen old films. They had terrible morals, like rich people straight-out slapping servants they felt were doing wrong, and of course the near omnipresent racism and sexism.

I totally expect the generation at the end of this century to despise our immoral pollution of the planet.