Then they're not paying attention to how little of the pad they actually use, and the irritating-as-hell spurious presses that can cost you several minutes (or more) of work.
There's nothing like filling out a form (or comment) on a Web page to have it suddenly reload or back-page, deleting everything you entered.
I've literally never had a "spurious press" on a modern Apple trackpad.
I absolutely loathed non-Apple ones when I had to use them, the palm detection was completely useless and the cursor just swooshed around. I usually disabled the touchpad in the BIOS and just used the red nipple-mouse on Lenovos instead.