Also if you read R’ Elyashiv’s teshuva and R’ Shternbuch’s teshuva, although they come out against techeiles, there is no mention of mesorah.
So?? It is a big machlokes between mesorahs and gedolim what a mesorah says, can say, and how to apply it. Like I said before, just go ask someone credible who desists from techeiles on the basis of Mesorah to explain it.