That Youtube channel is entertaining, but I think they are rather lax in fact checking some of the subjects they discuss. I used to be subscribed to that channel, but lost interest due to their "style over substance" way of doing things.
As Peter B pointed out, there are a few obvious ones in this one, and I agree that it detracts from the overall video. The presenter saying kilometers instead of miles when he gave the average distance to the moon is understandable given where he's from, but mispronouncing Ed White's last name (he got it right later) was something that should have been caught, and giving the planned launch date for Apollo 1 as the date of the fire made it seem like whoever wrote the script just did a quick search, saw that date, and went with it.
In general I find their videos entertaining, but as you said, they aren't always fact-checked well.
