Im not saying that there is any good way to distribute out money to every single post on steemit (or even that it is desirable) but if that is what youre trying to do, for a fixed amount of voting power, the most effective strategy is to downvote many high paying posts, rather than upvote many non-paying posts.
On the narrow mathematical point that it is strictly speaking more effective at approaching a basic income by some infinitesimal and practically irrelevant amount, I agree. Unfortunately it is easy for people who are not so mathematically inclined to misinterpret statements like this and think they have some practical significance when they really do not.