Because the "something" in question is not decryption. It's actually specifically something with no useful result, just a benchmark.

Decryption with quantum computers is still likely decades away, as others have pointed out.

To be specific, the best know quantum factoring did 15 = 3x5, and when 35 was not able to be factored when attempted. Most experimental demonstrations have stopped in recent years due to how pointless it currently is.

The amount of cubits required for a practical application of shors algorithm to break modern encryption is known and it's around 2500 qubits

Willow has 100