There are two kinds of people who play FFXIV:
- Those who play 24/7.
- Those who aren't logged in 24/7.
The people who are logged in 24/7 at the cost of friends, family, and regular exercise are really mad that the people who see the sun at least once a week will get experience a little faster to make up for the 8 hours of sleep and 40 hours of having a job and however many hours of having a social life that they're out of the game.
But don't worry, 24/7 crowd! You'll still get more overall experience! Rested experience might narrow the gap ever-so-slightly, but it'll never let people who do things other than play FFXIV 24/7 catch up to you!