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From what I take from the posting it's a dynamic value. If your upvote is worth more then 0.10 you are considered a dolphin and if your upvote is worth a few dollar then you are a whale.

That means that so more users join so more difficult it will be to reach those level. We might allready late to the game and have no hope to get there.

Just just found out that https://busy.org actually shows a rating underneath your user:

image.png

They at least must have a fixed level for the various level.