If it’s true, it’s very newsworthy. Sigh.
Pure speculation on my part. We kill an Iranian General. The Iraqi (Shiite controlled) parliament demands we leave. The safety and security of any American business is now in jeopardy so they begin to pack up and go home leaving those businesses and industries idle. Likewise all the training of Iraqi security forces stops and that source of income also stops.
Like someone else said, we could very well view this as heads I win, tails you lose. Either we are out, and Iraq is on its own, or they beg us to stay. For the troops and the Iranian threat, not much changes, as those troops and assets will probably still be in region (Saudi, Qatar, UAE, Kuwait, etc) but Iraq will be the biggest loser. The down side is Iran would see a withdrawal as a victory for the Mullahs, and this will encourage more mischief.