I like the simpleness of the idea here, but don't like HTML-redirects (v/s 302s).. Wondering if you could just do this via Netlify redirects?

I've found using txtd.io as a URL-shortener a much simpler approach.

Or lightsaber, which does the exact same thing, but with Ruby (and allows some wildcards): https://github.com/captn3m0/lightsaber