I see your point, but I don't know. While Liquid Glass's initial beta release as well as the subsequent betas contain puzzlingly obviously bad reductions in visibility of many foreground objects, mainly because the background bleeds through too much, and problems like text on many panes, buttons, etc. being too light or too dark for the background they're on, the variety of reactions to Liquid Glass, positive and negative ("I see everything perfectly!" vs. "I can't see a thing!"), shows that no working group at Apple could have figured out what tweaks to LG the public would find results in a nearly universally acceptable version. Releasing LG as a beta gives them the feedback on readability that Apple could never have achieved on its own.