That sure is a lot of work to try to convince yourself that water baptism is not the moment of the remission of sins.Good response if true. And water baptism can't be so easily dismissed from salvation, like outer circumcision.
However, I'm sure you've read and heard the Scriptures in Acts and elsewhere, but I'll go through them with you anyway.
It's clear that water baptism does not always accompany conversion and receiving Jesus Christ. It does not mean that water baptism is not done at all by the new converts, however, there is practical and doctrinal proof, that water baptism is not necessary to be saved, no more than is outward circumcision.
Cornelius and his household is baptized with the holy Ghost without water baptism. God does not give of Himself to unconverted sinners. Receiving of the spirit is by the hearing of the word with faith:
Gal 3:2
This only would I learn of you, Received ye the Spirit by the works of the law, or by the hearing of faith?
1Pe 3:21
The like figure whereunto even baptism doth also now save us (not the putting away of the filth of the flesh, but the answer of a good conscience toward God,) by the resurrection of Jesus Christ:
Water baptism is indeed a physical figure of conversion, but is not the conversion by faith toward God.
Natural water does not wash aways sins and trespasses of the soul, no more than natural blood of bulls and goats...
Jhn 15:3
Now ye are clean through the word which I have spoken unto you.
Eph 5:25
Husbands, love your wives, even as Christ also loved the church, and gave himself for it; That he might sanctify and cleanse it with the washing of water by the word, That he might present it to himself a glorious church, not having spot, or wrinkle, or any such thing; but that it should be holy and without blemish.
Only the washing of the clean word of God, is the baptism of Christ to convert the soul. Even as the circumcision of the Spirit cuts off past sins and trespasses.
1Co 12:13
For by one Spirit are we all baptized into one body, whether we be Jews or Gentiles, whether we be bond or free; and have been all made to drink into one Spirit.
Col 2:10
And ye are complete in him, which is the head of all principality and power: In whom also ye are circumcised with the circumcision made without hands, in putting off the body of the sins of the flesh by the circumcision of Christ:
No one can say that faith and conversion cannot be with water baptism, but repentance and faith does convert the soul without water baptism.
Act 2:36
Therefore let all the house of Israel know assuredly, that God hath made that same Jesus, whom ye have crucified, both Lord and Christ. Now when they heard this, they were pricked in their heart, and said unto Peter and to the rest of the apostles, Men and brethren, what shall we do?
Acts 3:19
Repent ye therefore, and be converted, that your sins may be blotted out, when the times of refreshing shall come from the presence of the Lord;
The one thing that faith and conversion cannot be without nor before, is repentance from dead works without Christ:
Mark{1:15}
The time is fulfilled, and the kingdom of God is at hand: repent ye, and believe the gospel.
Heb 6:1
Therefore leaving the principles of the doctrine of Christ, let us go on unto perfection; not laying again the foundation of repentance from dead works, and of faith toward God,
Eph 2:12
That at that time ye were without Christ, being aliens from the commonwealth of Israel, and strangers from the covenants of promise, having no hope, and without God in the world: But now in Christ Jesus ye who sometimes were far off are made nigh by the blood of Christ.
Instead of all these verses that do not mention salvation by faith alone, would it not be quicker and more convincing to share a verse that actually states faith alone?
Your words are more akin to philosophy than theology.
Jesus Himself clearly stated that whoever believes and is baptized will be saved.
There is no need to cross examine such a simple statement unless you don't want it to be so simple.