This is more than just a small "oopsie". This video makes a strong case that it is possible to go faster than 150 m/s with good hardware, and that it may be impossible to reach 150 m/s with bad hardware.
I design many of my ships to fly at the supposed speed limit, mostly to avoid combat. If someone can go faster than that because they have high-end hardware, and even if it's just half a meter per second, they will eventually be able to catch up with me and destroy me. Speed is important, and small differences matter a lot at the high end. I agree: this is a very concerning issue.