Agents do take the actions they predict they will take - it seems like a matter of fact to me. However, that's not the criteria they use as the basis for making their predictions in the first place. I didn't ever claim it was - such a claim would be very silly.

Indeed. You originally wrote:

The agent doesn't know what action it is going to take. If it did, it would just take the action - not spend time calculating the consequences of its various possible actions.

You language is somewhat vague here, which is why EY clarified.