Glass is a pain in itself and "preparing for a future in spatial computing" is such a bullshit line when the spatial computing future is still 5-10 years away at minimum, and will not be achieved with Apple Vision, at least not in the current shape and form.

Meanwhile, Material Expressive is trying to force a 2020 graphic design trend onto mobile apps. It literally feels like designers at google just wanted to do something new and modern, so they went with a bland corporate "modern design" aesthetic, that reduces UX in name of UI - even tho they are like oooooh users found this button 30% faster, it would be well fucking expected, since highly-paid designers have just redesigned the thing.

Meanwhile, apps will continue to be made in their own style.

Apple will release liquid glass support with 26 and we'll see it appear in new apps. At the same time, Google will probably do a partial release of the new material components for developers, where a giant part of components will lack features described by the design spec, a bunch will be missing, and a bunch will be utterly unusable because Google can't create a good DX to save their lives.