The mechanical parts hold up. Owners with a stable of Keychrons report almost no failures across years of use, and the one physical break mentioned (a hot-swap socket popping off the PCB) came after very many switch swaps, which the owner half-blames on themselves. The failures that do show up are unit-level rather than design-level: a key that stops registering properly, a misaligned USB port out of the box, Bluetooth that degrades over months. Owners who can fix things themselves do, with the retailer's blessing in at least one case. Owners who cannot are the ones who end up in the support queue, and that is where accounts turn sour. Build quality overall is divided: roughly as many call it solid as call it inconsistent, and a few sit in between.
Be clear about how thin this is. Only a small share of the owners we read spoke to long-term reliability at all, and most of those are people who own several Keychron boards rather than a single Q6 tracked over time. The positive long-haul accounts outnumber the negative ones, but there are not many of either, so treat the reliability verdict as an early read rather than a settled one.