I feel most peertube users would not care. But is it legal, or a chance that some one might sue?

edit: added claritiy to the question title and post body.

Peertube is an open source platform where I feel most users are posting there just to have fun and as a hobby for no or little profit. While Youtube is ad supported and creators on there now days want to use it to make profit.

On Peertube should it be legally acceptable to download uploaded videos for free for offline use? Is it legally acceptable?