Not sure what you mean, they added automated transcriptions a few years back and it’s mind blowing. I regularly use it for 6-8 hour long court footage and it’s superior than any other local solution I use, albeit not perfect
In my experience unless everyone in the video speaks perfect BBC English it's really really poor quality, and I use it all the time. And for any videos with made up names it just falls apart - try watching an average video game review with it on.