For those of us hit by the recent announcement here is a graph I found with some other services worth checking for your next voyages. I have crossed out All-Debrid too as that is also hosted in France and is bound to be hit by the same hammer as Real-Debrid was.
Feel free to share your alternative solutions in the comments below, but always do you research carefully!
The graph shows which Debrid services are supported by each addon for Stremio. Torbox seems to be a new popular and modern alternative. If anyone has any experience with any of the listed services then feel free to share your experiences in the comments.
Edit: Debrid-Link is also French!
Source to graph: https://guides.viren070.me/stremio/faq?debrid-service=real-debrid#which-debrid-services-are-supported-by-each-addon
Trying out TorBox as I write this. Has some cool features and it looks like a lot of people from RD are hopping over to it. New servers are arriving Monday for the huge amount of new users. And it's also quite cheap. There's a black friday sale going on right now too.