The restaurants get to set those values though. A coffee shop near me puts the default options as $1, $2, $3 for low order totals. So if I go in and get a coffee (which is $4.50), the lowest tip option is 22% and the highest is a whopping 66%.

I've seriously gotten tip fatigue and have been working to move back to a sane standard. I've noticed the places that have these crazy tips, also pay their staff well.