Are Built-In Laptop Sleeves Even Necessary?

Modern laptops feel sturdy. The main risk should be the screen, most likely to crack by a drop to the corner or direct blow to the screen back. I guess hard drives are next, with an SSD more durable than a traditional drive. Nowadays there aren’t protruding elements or buttons like CD-ROM days.

There is a functional argument for ease of access for someone using a backpack for a daily commute.

Also, I can see a case for students that are only carrying some bulky textbooks. A loose laptop will get banged around.

For the typical traveler, the laptop will be cushioned by clothes and stuff, and won’t move around.

As for spills, a typical laptop sleeve is not waterproof, so a spill will do damage regardless.

Has anyone really tested the necessity of these sleeves? Is the risk so high as to justify taking up all this space and added weight? Compared to buying a slim sleeve for the laptop itself?

An analogy comes to mind. When I pack something to ship, I carefully add tons of packing material. When I receive a package from an online store, the packing is minimal in comparison and almost always does just fine. I put all kinds of tape on boxes, Amazon puts on one strip and the box stays shut.