This sentiment is appealing, but there's little backing it. Humans have always shaped nature, and regardless of people, ecosystems are dynamic (1). We should be asking ourselves what sort of world we want to live in, and what we want our impact to look like. We should not harken back to a pre-human influenced time that never really existed. (Most restoration plans don't plan on restoring ecosystems to a fully pre-human state, but rather to some time where humans were present, but not as numerous).
We should instead say things like "this ecosystem was better 300 years ago, and we should try and return to something closer to that". That's wholly different from the narrative of natural being everything but human. It does, however, force us to qualitatively analyze what we're doing. Instead of saying "we changed it, now we have to restore it", it forces us to think about what the costs and benefits of restoration are.
1. https://en.wikipedia.org/wiki/Historical_ecology#Human-media...