"With current systems, focus on the keyboard is always needed. It is almost impossible to slide the finger on letters without paying attention on the screen. Focusing elsewhere, even for a split second makes it extremely difficult to resume the word in-progress."

This is the exact assumption they are battling with tap typing. I wish they would realize that their same system could infer tap points given a swipe path.

Let the users type how they want, whether tap or swipe, and let their algorithms figure out the rest.