We're not even talking cutting edge. If you browse hetzner's auction page you can see they're renting machines with almost decade old CPUs like the Xeon W-2145 or i7 6700. That's just a lot of old hardware..
They're great for hobbyists but people on here keep bringing them up as the flagbearer of euro hosting
ECC vs non-ECC is also pretty irrelevant on a box with < 64GB of memory
And no, ECC is relevant with less than 64 gigs of ram, there's a reason it's been a standard on servers since the 90s