The first video at 2:52 says the least is "le plus...." but should this not be "le moins...."?

Bonjour William !

The videos on our website often come from third parties, so we cannot edit them.
However, in this case, only the last part of the video is relevant to this lesson, so we've edited it to only play that part of the video, where the mistake doesn't feature.

I hope that's helpful!
À bientôt !