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I gather it doesn't flex anywhere near that much in reality, that's just illustrative. Some reviewers seem to like it.
To be honest I think it's way overkill and I don't think it's really worth worrying about the fork being too stiff when you're riding on tubeless (I presume) 47mm tyres.
Here's another option for a bit more compliance:
Edit: Amey's new bike: 800mm wide drop bars, floppy stem, truss fork, 47mm tyres - Ultimate Compliance™
maybe this: