it looks like he has got some popularity by acting frugal with his own expenses, living modestly.
It was posted " And completely misunderstood because despite all the biblical warnings not to go outside the Bible to interpret the Bible, people (even otherwise scholarly people) have gone outside the scriptures and created or bought into smart sounding interpretations... but as wrong as wrong could be."
Where do you find "all the biblical warnings" not to go outside the Bible to interpret the Bible? Do you reject the spiritual gift of teaching?
Now take the words that you just posted, are you quoting the Bible when you say them? If not, and people follow your admonitions, are they going outside the Bible?
2 Peter 1:20-21 (KJV)
20 Knowing this first, that no prophecy of the scripture is of any private interpretation.
21 For the prophecy came not in old time by the will of man: but holy men of God spake as they were moved by the Holy Ghost.
Deuteronomy 4:2 (KJV)
2 Ye shall not add unto the word which I command you, neither shall ye diminish ought from it, that ye may keep the commandments of the LORD your God which I command you.
Deuteronomy 12:32 (KJV)
32 What thing soever I command you, observe to do it: thou shalt not add thereto, nor diminish from it.
Proverbs 30:5-6 (KJV)
5 Every word of God is pure: he is a shield unto them that put their trust in him.
6 Add thou not unto his words, lest he reprove thee, and thou be found a liar.
Revelation 22:18-19 (KJV)
18 For I testify unto every man that heareth the words of the prophecy of this book, If any man shall add unto these things, God shall add unto him the plagues that are written in this book:
19 And if any man shall take away from the words of the book of this prophecy, God shall take away his part out of the book of life, and out of the holy city, and from the things which are written in this book.
Ecclesiastes 3:14 (KJV)
14 I know that, whatsoever God doeth, it shall be for ever: nothing can be put to it, nor any thing taken from it: and God doeth it, that men should fear before him.
1 Thessalonians 5:21 (KJV)
21 Prove all things; hold fast that which is good.
1 John 4:1 (KJV)
1 Beloved, believe not every spirit, but try the spirits whether they are of God: because many false prophets are gone out into the world.
Acts 17:11 (KJV)
11 These were more noble than those in Thessalonica, in that they received the word with all readiness of mind, and searched the scriptures daily, whether those things were so.
2 Timothy 3:16-17 (KJV)
16 All scripture is given by inspiration of God, and is profitable for doctrine, for reproof, for correction, for instruction in righteousness:
17 That the man of God may be perfect, thoroughly furnished unto all good works.
You test all things by the scriptures not the scriptures by all things. For therein lies the authority*.
You add to or take away from scripture when you interpret from outside.
The Holy Spirit who wrote the Bible (2 Peter 1:20-21) leads us to all truth (John 16:13). But you cannot know it even is actually the Holy Spirit without the Bible (Acts 17:11 / 1 John 4:1).
* Psalm 138:2 (KJV)
2 I will worship toward thy holy temple, and praise thy name for thy lovingkindness and for thy truth: for thou hast magnified thy word above all thy name.
John 17:17 (KJV)
17 Sanctify them through thy truth: thy word is truth.