tl; dr unsigned integers suck, but the train for fixing the problem has left the station
This is a very silly statement. Unsigned integers do not suck, they are extremely valuable and important. When used appropriately. When you want modular arithmetic, or a collection of bits, you want to use unsigned integers.
But when you want an integer that should not be negative, the useful properties of unsigned integer types are not appropriate.
It doesn't help anybody to make sweeping over-general statements that they "suck".