Yes to the first part (and thanks for support there), but not necessarily on the second.
I know we disagree on this, but I just don't see it as absurd. Difficult, yes, hard to grasp, yes. Absurd? He knows way more than I'll ever be able to grasp. He's God. There is a huge chasm for understanding. I understand the 'absurd' assessment, but it seems to be a logical box to me. It is like saying 'no' or 'yes' to the omnipotence question. I can't anwer it. Can God know the 'unknowable?' It is a bit like that.
Now the question: Is a myriad of contingencies unknowable? Daunting yes, but after that I'm without facility to answer. Too big of a question for me to even comprehend if it could be absurd or not.
One can know a myriad of contingencies, but only as possible or probable. By definition, there is an element of unsettledness (may or may not happen; alternatives) until the choice is made and the possible becomes actual/certain. God knows reality as it is, so why go beyond this? The future is not there yet, nor is it settled like the fixed past. God correctly knows it as such because this is the type of non-deterministic creation He sovereignly chose to actualize.