Headline is wildly misleading.

All apple did was add a setting to turn off some of the liquid glass appearance that users were already doing by turning off a couple of other individual switches that already existed. And from what i hear the settings only turn off some of the liquid glass appearance, with much of it still present even with the switches turned off

It's obviously an indicator of very many people not liking liquid glass that forced Apple to add a switch to (partially) turn it off, but liquid glass is very much still alive in all of Apple's current and upcoming designs.