I don't believe it was well designed, it felt clunky to use, concepts weren't intuitive enough to understand after a few uses.
I tried to use it for a few months after release, always got frustrated to the point I didn't feel like reaching out to friends to be part of it.
The absurd annoyance of its marketing, pushing it into every nook and cranny of Google's products was the nail in the coffin. I'm starting to feel as annoyed by the push with Gemini, it just keeps popping up at annoying times when I want to do my work.