Many of them were outraged by this new iMac. They thought it a silly design and how it was going to finish off Apple. Nobody was going to take this seriously.
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People forget how OS X Cheetah caused outrage with its Aqua interface.
You’re comparing apples to oranges, and like yourself I was there at the time.
The iMac was indeed received with mixed response initially, but what we should be analysing is the user reaction, not the onlookers. In this regard, the iMac design was a success because it enabled a friendly, jovial appearance that allowed the core technologies to be visible, thus highlighting that computers didn’t need to be scary to newcomers.
OS X was a genuine shock to the computer user because it was radically different to preconceived notions of what an OS could look like. But, importantly, the concept was sound - and that is the key differentiator to Liquid Glass: the quality of the concept.
People comparing Aqua to Liquid Glass are missing an important point, which is that Aqua existed to enable depth between UI by contrasting elements with clear and obvious purpose.
An application window frame would use flat brushed metal to conceive notions of integrity and to reflect the material of the hardware, whereas many buttons use variations of liquid ‘aqua’ as a floating and contrasting area of depth. Simply, the use of flatness and 3D graphics were warranted and used well for a striking visual contrast.
Liquid Glass, on the other hand, is a single ‘material’ that is intended to transform to a range of elements, but in the process masters none of them because the properties of the material are not conducive to the broad range of on-screen actions. Apple has a taken a one-size-fits-all approach, not considering the implications on accessibility and usability.