Based on what criteria do some Relude functions use String over Text?

Hi! I've started using Relude and noticed that quite a few functions use String over Text. In my particular case I used getArgs which returns [String], die which takes a String and readEither which takes a String. The documentation says Text is preferred over String but doesn't really specify when String is considered appropriate regardless. I'm curious as to what the rationale is, and if those functions can be changed to use Text, I can try making the PR.