I’ve had mine almost a year now. My M1 air has excellent build quality and I’m a very happy camper. My M1 iMac is only 6 months old but also awesome with no issues whatsoever. I only have two data points to go on, but in my experience every Mac since the unibody era started (2008) has been extremely reliable. I may be the only person on the planet who never had a single issue with those butterfly keyboards.