I think this is well-said. However, there are a lot of people on the Earth right now who are actively involved in killing off life (200 species going extinct every day!) - and thus are diametrically opposed to us, and all life on earth. So we do have a “cause”, in the sense of protecting life against those who would destroy it.
I just don’t see how rewilding jives with standing by and watching the beloved forest where one lives be clearcut, for example.
If the wild Earth is gone (which the destruction is rapidly leading to), how far will all of us even be ABLE to rewild? And how much more difficult is it to live in harmony with the land when the forest has been turned into a tree farm because of logging, reducing the understory flora and wildlife to a few species, eliminating the richness of herbs, berries, critters, etc that would sustain us and keep us healthy? The more we rewild and reconnect with the real world, the more we are affected (in more direct ways) from the local and planetwide extinction of living things.
The more I travel down the rewilding path, the more compelled I become to ACT to stop the destruction of the wild. To me this is a fundamental part of the rewilding process.