This comment is kind of fascinating because it’s essentially reinventing Slashdot’s metamoderation system 25 years later.

It was good then. No reason it wouldn’t work again today.

You can also just spend $10 on a domain name with a registrar that offers dynamic DNS. Offhand, both Namecheap and Cloudflare do. I have no idea what my public IP address is because my router just updates it automatically for me. Plenty of DDNS desktop clients around if your router can’t for whatever reason.