Yep.Point being that when God called BOTH Christ and Israel His firstborn son, so there is clearly a DIFFERENT CONTEXT for each.
Ephraim is called GOD's firstborn. Jer 31:9
David is called GOD's firstborn. Psa 89:27
Israel (Jacob) is called GOD's firstborn. Ex 4:22
And yet none of them were the 1st born of their fathers, nor the only son of their fathers.
"firstborn" is about rank, not sequence (as in 1st 2nd 3rd of sons born).
Likewise, the Lord Jesus Christ is called 'firstborn' of creation.
Rank, not sequence.