I'll settle for "gets voice to text right most of the time". Seriously, Apple is so far behind on the cheapest table stakes at this point I highly doubt their high standards is the issue.
Honestly, I bet your question is exactly what every team adjacent to this problem at Apple is doing. Pointing fingers at each other and saying, "This isn't my problem. This is some other team." It's so egregiously broken that obviously no one inside there considers it their problem. I think this must be rampant at Apple currently. There's just no explanation for how their software has gone so completely to shit over the last ten years.