Long-term Blackberry user (and I still have a Blackberry Key2) - Yep. I can type out entire grammatically correct paragraphs without looking at the phone at all. That muscle memory was carefully honed in the late 2000s high school classroom!
It's only if I get into the infrequently used symbols that I have to check what I'm typing.
In a quick online typing test I get around 60wpm/300cpm (characters per minute), 0.0% errors.
I was able to touch-type very quickly on my palm pre and palm pixi. Even a modern touchscreen swipe keyboard can barely compete, and you can't use a swipe keyboard without looking at it (well, not accurately).
It's been long enough that I can't guarantee it, but I recall it being very comfortable and fast to touch type on a Danger Hiptop as well.
touch type is just muscle memory - you absolutely can touch type with physical keyboards once you learn how.
touch typing on a virtual keyboard on a flat glass screen is hard because they keys are less accurate and don't give you feedback to whether you actually hit a key or not. So you CAN touch type on a screen, just with errors. Way too many errors. Which is why autocorrect is aggressive on all phones these days.
Back when we had physical keyboards on every phone, we didn't need autocorrect because the typing was accurate.
I think that actually is easier on a smaller keyboard, since you can reach the keys without stretching your thumbs. On this phone, you'll definitely be stretching your thumbs (on my iPhone 12, I can barely touch my 2 thumbs when holding the phone horizontally)
I have long thumbs so Blackberries were actually a bit too cramped for me to properly enjoy it. Touch typing was still possible, but less comfortable for me than on a side-sliding keyboard like the Droid line had.
