This seems like overkill to me, but Lamont is speaking very highly of this method. I personally rewatch movies extremely rarely, and the number of movies that I have seen more than once is very small, so the idea of watching one movie 50 times is rather nauseating.
I do, however, concur that re-consuming A/V media in an L2 is beneficial to me, as I noticed that I tend to struggle with correctly interpreting grammar the first time around.
Ah, I haven't looked at the actual learning strategies of refold, I've only seen their flash-card packs (which look good!). I assumed it was more or less a kind of Dreaming Spanish style service with more guidance rather than this style L-R where it seems like you just kind of jump into the deep end a bit with a source you can commit to putting up with.
(Sorry I didn't see your reply till today btw, kbin ate the notification it seems).
I think I might give it a go for a movie 10x. I have about 1600 hours until fairly okay fluency aparently so 10-20 hours wouldn't be too much out of that time. I may have to mix in other content while I do that though haha.
I'm a big fan of comic operas/operettas, and repeat listening to particular shows has honestly helped my German quite a lot. It's a pretty good way to train your neural network for grammar. And the music makes it a lot more fun to listen to the same things repeatedly!