The mesora is lost, let’s move on. When Eliyahu comes he will reestablish mesora, until then it’s conjecture, you are not yotze a mitzva when the possibility if it is rotted in conjecture. It’s not a sofek it a shot in the dark. Next.
(don’t compare this to the chazon ish and esrogim, where we know what an esrog is, we know what it looks like, but we want a mesora on a spesific esrog that it’s not from a murkav. That is what he said he rayos are as so good that the esros can be treated as if there is a mesoroa on it that it’s not murkav. over here, we don’t know the color, we don’t know the species, we don’t know the process, can be yotze tzitzis, etc.)