I used to run minikube on my MBA till last year (Was running Arch). It was very underpowered to run a cluster, as I guess they'll soon find out. This was a MBA 2015, so the OP's 2012 MBA is even less powerful.

The fans would start whirring, and the device was immediately unusable for anything else. I switched to using microk8s, which is slightly better, but still makes the device crawls. The MBA also only has 4GB RAM, which is very low on what you might count as k8s-ready.