I disagree, it is great to use. Yes, some things are more difficult but as OP mentioned he wants to learn more, and running your own cluster for your services is an amazing way to learn k8s.

Yup, sorry to be the bearer of bad news🥲

Plenty of IPv4 only networks still exist from which you would not be able to access the services. I am in a similar situation as OP with my offsite address being IPv6 + CGNAT IPv4 and my own address being IPv4 only.

So it is not running llms on an average gaming pc