My thought is it will give time for curation groups and bot owners to figure it out and for others against it to come around or at least see the effects.
My hope is people will find themselves forced to set it high as bot owners, large voters and curation groups won't interact with people who arent setting it higher.
As for the people saying curation is not linear, I am not sure about the details, but it seems trade off there is also possible. For example the higher the curation on the post the more linear rewards become. Also, curation should be linked to the size of the vote and not post pay out, or no one will curate people outside their circle.

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