@SteveFaulkner Meanwhile I stubbornly stick to typing, even though it is painfully slow on Android (I wonder what makes TalkBack lag so much more than Voiceover), and have even disabled all autocorrect and suggestions.
It takes more time, but in the end it will be done right. I do not like the unreliability and weird mistakes of dictation. My speech isn't clear and english-accented enough for it. And even when reading messages from those for whom it works better, I can always tell dictation was used, because there's always these weird errors that a sighted typer would never make.
Besides, dictation would be far more impractical and annoying to others in public. With typing I can put on my headphones, turn the screen off, and write whatever I want, without anyone else hearing it.