The more times I see people using the "official" numbers, the more annoyed I get, because it's downright lazy. There are plenty of examples where the actual speed of a ship or given warp factor can be derived purely from online transcripts. There are plenty of others, including one that appeared in the very next video, that can be calculated from observation. Most of these are significantly faster than the official numbers, even discounting those caused by the anomaly of the week.