em even if you can name a Gadol who does wear techeiles (and I’d rather avoid the debate “who is a Gadol”), he is certainly batel b’shishim. /em
A gedol BATUL??? A gedol is a gedol, even when other gedolim disagree with him.
“the cheif rabbi (who then was actually a rabbi in Ireland) Reb Yitzchak Isaac Halevi Herzog ZT”L.”
He was the Chief Rabbi of Ireland for about 20 years. The techelit research was done for his doctoral dissertation in chemistry prior to his appointment to that position. Rav Herzog z’tz’l was well respected by all, even those who did not choose to wear techelit.