That is quite interesting. Only issue is to rely on Github Issues for it (it might get messy with too many issues opened). I had this same ~dream of hosting a URL Shortener statically, which lead me to create URLZap. The difference is that it relies on a config file and it can be used on any code repository service https://github.com/brunoluiz/urlzap
Almost similar strategy here, static file generator for redirect https://gitlab.com/davch/static-redirect