It's actually one of the most powerful enhancements one can make to a programming language

Here is an exercise that might help illustrate the power of t-strings: Write an example of a "classic" SQL injection vulnerability, using f-strings for naive interpolation, and then change the f to a t. In principle, it is possible for an SQL library to turn the resulting t-string into an entirely safe prepared statement and execute it correctly (at least for the vast majority of real-world interpolations). However, this does require the library to support it, which is an issue. Another issue is that f-strings will serve as an attractive nuisance for less experienced developers, so it is likely wise to introduce a new method or function that *only* accepts t-strings, even for commands that have no interpolations (so that you can't pass it an f-string at all). You could then train developers to only use the new method/function for all SQL execution, and introduce a linter to find uses of the old method/function.