As a technologist perhaps solve it with tech, the first step would be to host your own content instead of using a third party app based in U.S. There is not a lot of deep tech to what GitHub gives as a githost, a self hosted gitlab serves just as well . Similarly for video photos etc, it is very hard and expensive to deliver video for millions/billions delivering video to few thousands is trivial. same thing for sub stack, medium etc
Generally these take down notices don’t go after your DC/ISP domain host provider that easily unless you are in the cross hairs of powerful lobbies like how Libgen or PirateBay are , so self hosting helps a lot.
If they do then there is distributed systems like IPFS etc can be resilient to notices.