Perhaps it was always so, but for several years now it’s felt like the collective consciousness has extreme presentism.

Huge events sweep across the world, everyone experiences them, and then they’re forgotten. Even the recent past is gone.

As for the future, the order is assumed eternal. Only the present exists.

Maybe your assumption that this is a new phenomenon is itself an example of presentism. I think this is normal. Fads come and go fast, tragedies are dealt with then we move on to the next challenge. It's just how people deal with things.