Teddit and other alternative frontends were a perfect way to send someone a Reddit link when they didn’t have an account because the mobile web experience is just pure cancer.
this is just one of the instances
there are many more instances according to farside.link (which is a thing that will automatically redirect you to one of them: farside.link/teddit/ ) so by using this, you help reduce the load on individual instance, resulting in less “too many requests” errors for everyone.