Liquid Glass is fine, it's used so sparingly across the OS that it's not that intrusive. But the whole OS just feels... ugly. When I heard Apple was adopting the glassy look from visionOS I was excited because I was hoping they'd be taking the gray, smoked glass look. I think the fundamental problem with this redesign is that they're trying to do everything white on white using only faint shadows and gradients to provide depth and differentiation.
My biggest issue is the sidebars. Since Yosemite sidebars have had a visual differentiation from the main window by using a soft, blurred translucency. Now they're a slab of Liquid Glass that floats above the window contents. For apps like Maps or Home it provides a neat effect because the contents slide under the sidebar, but for the majority of windows there's nothing underneath, it's just plain white with a tiny hint of color refraction from the desktop or window contents.