Not sure what you mean by the "that" when you say "if that's true", but there is nothing in this thread or by google that is anywhere close to breaking encryption.
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.
No, this quantum computer cannot factorize the large composite numbers that we use for modern RSA. Even for the numbers that it can factor, I don't think it will be faster than a decent classical computer.
