[munificent]

It may only be 1%, but that small fraction of users are also probably the people who sure as hell don't need even one more tiny thing going wrong in their life.

If you're using a decade old phone to sign up for a utility, you've got bigger problems in your life and no self-respecting person should be adding to them.

[miki123211]

A decade-old phone was released in 2016 (yes, we're old).

React already existed in 2016, so did Vue and Typescript. Never mind good old JS.

I frankly can't imagine a device capable of supporting modern TLS stacks but incapable of supporting JS. Much less a phone, which in many countries basically requires LTE (and sometimes even VO LTE) support to function at all, due to the 2G and 3G shutdowns.