HDDs in Laptops over SSDs

I have always wondered why I am taught that moving a mechanical hard drive while it is reading or writing can be detrimental to and can effectively destroy the drive. However, imagining that all laptops had SSDs or possibly Hybrid drives which I don't quite understand yet, why do laptops have HDDs inside them? Are they the same types that are inside desktops but only at a 2.5" form factor? Thanks in advance.

Edit: So 2.5" form factor drives are usually optimised to be more resistant to general bumps and hits a normal laptop would go through in its lifetime?