That’s not how it works.
Yes, the odds that it happened are 100%, but that’s a pointless statement. The odds that it would happen are unaffected by whether it did or not.
The odds of a die coming up 2 are 1 in 6. I just rolled a die here on my kitchen table, and it came up 2. Even so, the odds of a die coming up 2 are still 1 in 6.