No, I don't think they were.
They were just doing their school assignment.
But I've seen elsewhere people complaining about the fact that the title was in English, yet part of the video was in French.
I've been told multiple times by Americans and Canadians, that I was trying to help by telling them how it'd be if they were to visit, that we were "retarded" for not translating everything in English. It does grow on you at some point.
Now, regarding the subtitling job itself : I'd be able to do it myself, but here's why I won't :
Considering most people featured in this video are able to understand both languages, at least to some extent, I would not feel comfortable with uploading a subtitled version that wouldn't have been approved by everyone appearing in it. And THAT would be a fucking huge headache and I'm not willing to deal with it.