I understand that this concept has the upside of not having to trust a central authority, but is this really any better than trusted timestamping[0], at least f

I understand that this concept has the upside of not having to trust a central authority, but is this really any better than trusted timestamping[0], at least from a legal perspective? [0] https://en.wikipedia.org/wiki/Trusted_timestamping https://en.wikipedia.org/wiki/Trusted_timestamping