Not sure if it counts as technology but it was a Ford Focus.

A Huawei MediaPad M5 Lite.

Their own lower-end APUs are sooo slow (even worse than Samsung) and the bloated stock ROM doesn’t help. The tablet was borderline unusable without limiting background applications (which for some reason reset every time you reebooted the thing), and it’s not like it ever got any updates.

An iBook. I had the GPU replaced twice under warranty. I sold it after the second time. Never again.

For society? A smartphone

I think the Thinkpad X130e with the AMD E-240 CPU. That processor, really, was the bad part. Every little single thing you wanted to do was absolutely CPU-bound, even when it was contemporary and new (c. 2011-2012). The amount of time I wasted waiting for the fully hammered CPU to do literally anything was too much.

I bought the laptop used because I figured a tiny Linux laptop would be great. And other aspects of it were fine, such as the display, keyboard, trackpad, build quality, etc. But that stupid CPU totally killed the device. Such a regret.