I bought 3 Minisforum machines for a Kubernetes cluster and they didn't make it 11 months. They weren't even powered on most of that time. They just completely freeze with a black screen, and randomly enough to where every time I think maybe I figured out a fix it just crashes again a day later.
My Minisforum M780 XTX has been rock solid for 20 months now. Bought it as a remote development box since I needed more RAM than my MacBook Air and didn't feel like shelling out $3K for a 64GB MacBook Pro. Generally prefer the remote development experience since it means the laptop stays cool, just a pain not being able to work at a cafe now and then.
No issues with my UM 780 XTX, been running mine for about two years as a homelab, running k3s and a bunch of random VMs.
Are you sure you didn't buy an Intel one by any change? Because Intel is garbage.