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if CO2 is removed from the oceans and other CO2 sinks, won't that still leave us in the position of having less free CO2 to release into the atmosphere in the aftermath? i'm trying to understand multiple angles of this issue because i'm interested in making a company to plant trees as a service.

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Yeah, sure, but the point is that it would only get you a third of the way to the goal of removing all man-made CO2 from the atmosphere (and oceans) rather than two thirds as was claimed. And the atmosphere is sort-of especially important because that's where the warming happens, CO2 in the oceans does not directly contribute to the greenhouse effect. Though it does cause acidification, which isn't exactly helpful either.

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