I agree generally. I definitely didn't have a problem with Vazquez taking the PK (or the next one). Gio may have felt a bit snakebitten after hitting the post twice. However Vanney said in an interview after the ECF game that the guys on the field decided who would take that PK. I think Vanney is quick to take ownership of his decisions, so I have no reason to doubt him on that.
Doesn't mean they won't be practicing & talking about PKs in training.