maybe a kasha but at most will remain only a kashya. the rishonim obviously worked it out since they had the yerushalmi (and maybe they disregarded it like the gra as we see from tosfos in chulin)
(also rav herzog was metaretz it in his work ????? ??”?)
yam domeh larakia the akeida (?”?) and all the baalei mussar use this to explain that in ruchniyus to reach the kisei hakavod you have to work upwards by building on what you already gained ayin shum.
who is “everyone else” that doesn’t go like the gra? can you find a rishon who quotes the yerushalmi and holds lmaaseh techeiles is green? so all you have is a kasha which the gra answers and no rishon says farkert.