Neville wrote: “You can’t just claim that every posek who doesn’t jive with you shittah didn’t properly learn the sugya.”
>I don’t claim every posek who doesn’t hold of techeiles didn’t properly learn the sugya, but of those who did many or most support techeiles,
Neville wrote: “You’re actually outright claiming to be smarter that Rav Eliyashiv on this topic.”
Many lesser poskim have some technical knowledge on Techeiles which Rav Elyashiv didn’t profess to have. Rav Elyashiv’s Teshuva doesn’t conclude that techeilies today is impossible, only that the evidence presented in the question is insufficient.