Mr. Laser Beam wrote:
^ That was *restoring* history, not tampering with it.
That was just Picard's bit of spin to try and convince his senior staff to go along with the word of a bartender. In reality, he had no way of knowing whether the last 20 years of history were "correct" or not, since he had lived every day and they were very real to him!
Call it what you will, this War-Picard had made the unilateral decision to try and change history for everyone.