Having used Thinkpads exclusively for decades, I had no idea it was a unique feature and nearly broke the hinge on my ex's Macbook Air when she was sitting across from me and wanted me too see something on her screen.

I reached across the table and grabbed the top of her screen pulling it down to horizontal while I leaned over to look down on it while she exclaimed "stop! you're breaking it!" as her keyboard elevated her hands...

Fortunately I had my Thinkpad in front of me and immediately demonstrated I wasn't completely insane for expecting it to be fine.