Not accurate.
14,000,605 was NOT every possibility.
14,000,605 only represents the number of possibilities that Strange saw out of infinite possibilities.
One of the biggest problems when people ask this question is they cannot get passed the 1 in 14 million possibilities, as if they are too focused on that specific number that it makes everything linear.
It’s not.
Strange “ONLY” saw 14 million possibilities.
They overlook the basic concept that 14 million is only a speck of dirt compared to all the infinite possibilities that exist. There are much more than just 14 million possibilities out there, Strange was only able to see a little fraction, just 14 million out of practically infinite possibilities. So there could definitely be more than just 1 possibility. Who’s to say if Strange had looked at possibility #14,000,606 that that scenario would’ve also guaranteed success? So now you have 2 possibilities, etc., etc.
When you finally see that concept, the answers are much clearer.
Strange looking into the future is not him predicting every single detail that would happen. He’s not there hoping that Steve Rogers would have to shave his beard at exactly 5:44.03 pm on a Sunday on the 4th of June for everything he saw to work out, etc. so I doubt he ever saw the Rat as well. What Strange saw was simple, he saw 1 out of countless other successful possibilities he could’ve seen if he had looked longer, but that 1 possibility that he did see Thanos being defeated was that Iron Man was there.
Remember in the ship when Strange got abducted, before he looked into the future, he told Tony that he will never surrender the Eyes of Agamoto:
”If it comes to saving you, or the kid, or the Time Stone, I will not hesitate to let either of you die.”
You can then say that most of the 14 million possibilities that Strange looked at most likely involved himself not surrendering the stone. All that possibilities ended up with Thanos killing Iron Man in the process and every single one ending in failure with Thanos managing to still get the stone from Strange at the end of the day..
It wasn’t until Strange started looking at different possibilities like what if he had surrendered the stone to save a comrade that his visions of the future started lasting longer and longer until he finally saw that 1 possibility that Thanos was defeated because Iron Man had lived. From then on Strange knew that Tony had to live for at least 1 of those possibilities he saw can come to fruition. Strange had no idea that what he did would ultimately end up working, but one thing he knew for 100% certainty was that Tony had to survive to greatly increase the chances that the possibility of them winning may happen.