Well, since you wanted to go there...
They are actually two clearly different drills. In the first one where I made my comment, it was a straight drop back. The other qb in the drill made his throw nearly 2 seconds sooner than Fields - for seemingly the exact same drill. Yes, I get that it's one drill, we don't see the receiver to the know the route, if the receivers ran the same route, etc.
In the drill in this clip, it is clearly not a straight drop back. It is play action and they are drilling moving around and keeping the base - ie, the comment on it being about footwork. So, not really worried about the time to throw on this one.
Look, I get it - overanalysis during the dead time of the year. I think it's great that he clearly continuing to work and hone his craft. All good things.
I just go back to the recent Hoge and Jahns podcast (the one with Dionne Miller) where they commented they would feel a lot better if they could see a 'clean' 7 on 7 drill with Fields as apparently they really had not seen one this offseason. They noted he needs to make quicker decisions, quicker throws, on time, and obviously to the correct read/receiver. These are all legitimate concerns and a big area for growth and improvement for Fields.