You're really struggling to read into this. Take this slow and simple.
Keeps mentioning setting up a visit.
Says it's planned and then all of the sudden the coaches won't be there when he's supposed to visit.
Knowing his timeline and obviously if they were really in the market and wanted it to happen, they wouldn't inconveniently be gone when he wanted to go there.
We're no longer going to be here when you want to visit = we're no longer recruiting you for one reason or another.
It has to be said to you a hundred times but this is not about him moving on from BYU. It's the other way around. From an outsider perspective it's just as obvious as an insider perspective.

Stop trying to make something of it. BYU was back and forth from the beginning, and Watson was always pushing the interest more from his end. And when they started recruiting him, the roster outlook was potentially different.