1) Scripture means what it says, Paul spoke to new believers as to men of flesh.
2) Paul does not teach fallen men have no ability to receive spiritual milk.
3) Saying fallen man has limited spiritual ability is not twisting scripture, Matthew 23:13 clearly indicates fallen men were seeking God, actually in the process of entering the kingdom.
4) Yes the visible church has both tares and wheat.
5) Claiming fallen people have no ability while ignoring scriptures teaching otherwise, such as 1 Cor. 3:1 cuts no mustard.
6) Questioning my comprehension cuts no mustard either.