You’re missing the broader context here. The prosecution is alleging massive fraud, while SBF’s defense is that he wasn’t committing fraud, he was just incompetent. So a lot of the trial hinges on presenting evidence one way or the other for the fraud-or-incompetence question. Things like the counter, which was clearly deliberate and specifically engineered to lie to customers, establish a pattern of deception and make it very hard to allege incompetence. The counter is unimportant in and of itself, it’s how it undermines SBF’s defense.