She has no choice but to. As I mentioned earlier, hack is broken by the lightest of farts, so doing it right in front of them where you can be seen is stupid. Furthermore, enemies with a brain with expect this and watch their back, forcing sombra to take even risker positions to hack people, like being right around the corner, next to the enemy team.
That is false. A common tip thrown around for dealing with Sombra as rein or Brig is to turn around and break the hack, and this is about the hack in its current iteration, so it is most definitely possible. Furthermore, the average response time of a driver is 0.7 seconds. Notice I said response time and not reflex. That means a conscious decision was made in that time. Also notice that I said average. That is means 0.65 is not physically impossible for a regular person to respond to. Heck, a gamer’s response time is even higher, averaging 0.2 seconds.
Irrelevant.