The "Alone Not Written" Argument Debunked

In the business of attempting to "debunk" Christian apologetics with nonsense arguments, the new argument called "alone not written" can be seen frequently as done by the so-called Christian cults.  So far, here are some verses that get frequently attacked with the "alone not written" argument with a refute below each verse:

John 14:6- "I am the Way, the Truth and the Life.  No man cometh unto the Father except through Me."

Comment: When Jesus said that He is the way and no other way, the word alone does not need to be there.  That means there is no other way.

Ephesians 2:8-9- "For by grace are ye saved through faith, it is not of yourselves, it is a gift of God.  Not of works lest any mean should boast."

Comment: So does the word alone have to be there to say that works are not included?  As said, if it's stated that one is saved by grace through faith and not of works, therefore works do not save.  The word "alone" is not necessary because it's already made clear that it is by faith and not by works.  The same treatment is given for Romans 4:5.

2 Timothy 3:15-17- "And that from a child thou hast known the holy Scriptures which are able to make thee wise unto salvation through faith which is in Christ Jesus. All Scripture is given by inspiration of God and is profitable for doctrine, for reproof, for correction, for instruction in righteousness, that the man of God may be perfect, thoroughly furnished unto all good works."

Comment: So again, they say that the word "alone" has to exist in as to say "All Scripture alone..." however if it's ALL Scripture then it's ALL Scripture.  Also, it's NOT some Scripture but ALL.  Again, the man of God is already made perfect and furnished into ALL (NOT SOME) good works.  Again, the alone not written argument really falls flat.

It has however become a boomerang against their arguments.  For example, the average Roman Catholic faith defender/apologist can get hit by it by a critic when quoting Matthew 16:18-19 that while they try to defend that the keys were given to Peter alone, so where's the word alone there?  This is exactly where it gets into nothing more than a circular argument.