I mean, all of these emulators are already very well archived and available from several sources, not to mention downloaded to the devices of millions of people. I highly doubt we would be in danger of losing any of them even if Nintendo were to sue literally them all overnight. Well, except for things like Github issues and pull requests, nobody bothers to archive those unfortunately.

But yeah, IMO the danger is moreso that the attacks are leading to a massive chilling effect and loss of developer talent in the emulation community.