The Typescript compiler, currently JavaScript, is being rewritten in Go. The 10x performance gain is in build time, which is still a major speedup and will shrink the development loop.
I had a great k3s experience with a silly, over engineered weekend project to automate my fog machine with motion sensors.
I connected motion sensors to battery & wifi enabled RPis, built a remote circuit to control the fog machine, and ran a k3s cluster with NATS to bring it all together. 10/10 would do again.