You have just given an excellent reason why the answer "because God is infinite" is not appropriate or sufficient for all questions. God gives us answers that go beyond some timeless shrug.
God has purposed that time does "have value" since He created time and He created within time for our benefit.
There are "real numbers" in God's creation (the Trinity certainly comes to mind.)
And the "unity of infinity" is due to the exact fact that God creates everything for His purpose, including infinity.
All points are the same.
And thus, that fact supports the lie of universalism because not all points within God's existence are "the same."
So again, "infinity" is not the answer to everything. Whereas "God's will" is sufficient to answer any question (although graciously, He often expands on that answer through His word and the indwelling Holy Spirit.")
God didn't create "infinity"! Infinity is an expression of God HIMSELF, or more accurately, the love that exists between the Three Persons of the Blessed Trinity. God is uncreated.
And thus, that fact supports the lie of universalism because not all points within God's existence are "the same."
Yes they are. On an infinite line, all points are the same. God is not made up of "parts", nor is He divisible, but is pure simplicity, pure unity. ALL is such in infinity. God is EXISTENCE or BEING itself, so God doesn't exist "within" infinity, He IS infinity.
As to numbers in infinity, God is one. Unity is triune, but not because of numbers. That would imply three gods.
This is a good example of the difference between "knowing about God", which Scriptures help us with, and "knowing God", which Scriptures say little about directly. We come to KNOWING God by prayer, not by reading a book ABOUT God.
Regards