they are doing exactly that now, but at some point, there's no discernible difference between a gaussian blur and a complex shader like liquid glass.
taken to an extreme, the heaviest possible blur results in just one solid color (at which point there is no visible difference between a gaussian blur and LG at all).
so the more blurry the shelf is, the less important liquid glass gets. therein lies the dilemma: you can't have interesting, complex backgrounds AND legibility. it's either one or the other.
the current design is good. or becoming good, finally. but it's also not worth the, what, 2 hour reduction in battery usage, the lags and visual glitches, the major changes many apps see themselves forced to undergo, ... because it looks almost like a gaussian blur now.
