I believe ETF was the single most common ID at worlds, but it failed to advance to the top 16. If we look at the runners that did advance, they had strong anti-glacier tech, either using Faust and ICE destruction to be able to make runs cheaply all game, or the Temu Whizz builds with uber-efficient breakers.
Pretty much all of them had Rumor Mill, which is probably the ultimate anti-glacier tech.
I think the field of runners was very well suited to beating glacier decks, particularly Foodcoats; a lot of the tech cards top runners were packing didn’t make a lot of sense for facing off against NBN (e.g. Networking is probably better than e-strike against the NBN field in the top16).
Foodcoats is still relevant, but in very large tournaments, so much so that runners will continue to tech against them. Clot-lock shapers are, in my experience (feel free to disagree), harder for NBN to beat than anarchs. However, anarchs are much better against Foodcoats than those same shapers.
NBN is stronger than Foodcoats right now. The gap isn’t necessarily insurmountable, or even very large, but at large tournaments with many rounds, that any gap will favor the decks that are strongest against the field that came out. Runners are very used to Foodcoats and tech against it almost as instinct. To a certain degree, a strong deck under performing because opponents were well prepared for it is a facet of this game.