The problem with technological smoking guns is that, however believable to those in-the-know they may appear, it's still a human problem to convince a layperson of their gravity. For example, the same technique was used to prove corruption in Pakistan [0], but a court rejected the evidence. Whether that is because they did not understand it, or were corrupt themselves, is another question.

[0] https://www.theverge.com/2017/7/12/15961354/pakistan-calibri...