Let me first preface this by saying that I think this likely a true statement. But the question is, how do you know? Maybe it's not true and both you and I are only assuming it's true? There's been a vastly growing interest in personal defense and responsibility since the beginning of the COVID lockdowns and I've seem a ton of new material, from written to video, on pre-attack indicators, heightened awareness, Cooper's color codes, and all the related material. Heck, I even wrote some myself a bit back. It seems likely that the general public is more aware now than they ever were before. The question then would be, how much of the general public and how much more aware?
Think of it like grappling. 30 years ago, fighters were unlikely to have much grappling skills. Sure there was the odd Judoka or fella with a HS/Collegiate wrestling background. But most? Nah. Now getting some wrestling, Judo, or (especially) BJJ is almost de rigeur. There are lots of other things about the personal defense and responsibility landscape that, likewise, have changed.
We need to be careful about our assumptions.
Peace favor your sword,
Kirk