It's not a waiver, its a rule and it's nothing new. An airliner has to
carry enough fuel to get to it's destination, divert to it's alternate
plus 45 minutes. You can't have a rule that "you have to fill up".
Filling up might not be ENOUGH fuel. Don't worry about THIS one, almost
all captains, being cautious, add a little extra fuel over the required
fuel so they have some cushion. Fuel exhaustion with airliners is very
rare, it has happened, but it's not likely. They watch their fuel very
carefully.