Earlier quoted context omitted.
Those impressive demos, e.g. the cup shuffling seem to have been "staged". The end results are correct, but the method of getting them is nowhere near as fluid and elegant as in the demo. They used a series of still images with carefully crafted prompts. More info: https://developers.googleblog.com/2023/12/how-its-made-gemin...
Everyone fudges demo's, but does seem like Google fumbles them, they backfire. When Bard 'hallucinates', their stock tanks. When GPT 'hallucinates', it's all good. This latest fumble does look pretty bad. A fudge to far.
No, not everyone fudges demos. But some do, and Google has a track record of it.
That said, it's common enough that I view all demos -- and especially those that I'm not seeing live in person -- with deep skepticism.