If the ruling goes the wrong way, like with many cases like this (drug use is a good example), it won’t help those in the past. However, it will open a door for everyone in the future.

My guess is every DCMA entity on the planet has already sent this judge a letter saying that allowing this defense is a terrible idea. I am honestly torn on this one since there are so many unknowns, and if Meta loses it will mostly be publishers that benefit vs authors.