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I think the reality will be that everyone thinks it means steam. The logo even looks like vapors. I wouldn't fight that, and those names don't reflect the esteem theme either. Anyway, just trying to be helpful. :)

I saw this confusion a lot, especially with new people trying the platform. In the white paper is explicitly stated that this is a form of esteem. Nevertheless, your help is appreciated :)

I don't think the allusions to water with minnows, dolphins and whales helps the situation much. :D

Whale is a common term in crypto, not only Steemit. Might come from the "blue ocean / red ocean" paradigm.