I remember posting that vid earlier this year on the Maye Draft thread being impressed, but quickly took it off after analyzing it for a few minutes. Imho, it's fake. Only ~3.4s to travel ~80yds is where they made their error, as that would've resulted in a questionably low launch angle requiring a questionably high initial velocity that doesn't match his arm motion, unless the wind was insane. I've tried watching a lot of his throws, including Pro day, and I haven't found anything more than ~63 air yards (which is Mac/Zap/Hoyer territory).
Here are some Caleb crossbar vids of ~60 and ~65 air yds taking ~3.2s and ~3.7s, which are way more realistic because they probably are. In a game, I've seen Caleb throw ~67 air yards.
Also, Milton's ~70 air yard throws are in the 3.7s-3.9s range, and the 3.7s was a relatively low line drive cannon.