That's actually about 2/3 of the screws that had to be removed to get into Ron's old MacBook Pro to replace its hard drive with one of reasonable size. There are somewhere around 30 in total. Almost but not quite as bad as the same procedure in the 12-inch PowerBook G4 I used to have! This is actually a very old hardware design, dating back to the 15-inch PowerBook G4, and replacing the hard drive in a MacBook is much easier.
Visible just left of center in the open-laptop image is the tiny ribbon cable connector that I managed to not quite seat properly on Sunday night, causing the P, Ctrl, and Option keys to not work. Not surprisingly, opening it all up and putting it back together the second time was a much quicker process.