Oh, it's immensely massive compared to anything that's likely to possibly exist as an element. But in proving something is finite, it doesn't matter if we overs

Oh, it's immensely massive compared to anything that's likely to possibly exist as an element. But in proving something is finite, it doesn't matter if we overshoot by a million million percent, all we have to do is establish any bound at all. We don't have to engage with the question of what we can do in a lab, because the question only requires any theoretical limit to exist. It may be difficult to predict just how far we can go in a lab, but the existence of black holes means there must be some limit.