It's sort of like how you can create a pretty good text message on your phone using voice to text but no courtroom is allowing AI transcription.
There's still too much risk that it will capitalize the wrong word or replace a word that's close to what was said or do something else wholly unconceived of to trust it with our legal process.
If they could guarantee a 100% accurate transcription of spoken word to text it would put the entire field of Court stenographers out of business and generate tens of millions of dollars worth of digital contracts for the company who can figure it out.
Not going to do it because even today a phone can't tell the difference between the word holy and the word holy. (Wholly)