I believe that it means words.
In any interpretation of the Bible, I find it prudent to use scripture to examine scripture.
Otherwise, snips of words can mean almost anything to anyone. (2 Peter 1:20)
2 Timothy 3:16 "All scripture is given by inspiration of God, and is profitable for reproof, for correction, for instruction in righteousness.
17 "That the man of God may be perfect, throughly finished unto all good works."
Considering the Psalm 12 as a whole, The main theme seems to be deception from the ungodly.
Psalm 12:2 says "they speak vanity..... with flattering lips and with a double heartdo they speak."
But one the most distressing verse to me is:
Psalm 12:4 ..."with our toungue will we prevail; OUR LIPS ARE OUR OWN: WHO IS LORD OVER US?"
What rebellion and Rebellion is as the sin of witchcraft.
In 2 Timothy 4 we find these same later times seducers.
Why did 'they' want to change the doctrine?
Psalm 12:5 continues:
"For the oppression of the poor, for the sighing of the needy,"
Remember the Laodicean church.... Or better yet remember when you were lost apart from Christ?
We were poor, but now we are rich. We were nakid, but now we are clothed by the Blood of Christ. We were oppressed and now we are free.
Revelation 3:17 ...."and knowest not that thou art wretched, and miserable, and poor, and blind, and nakid:"
How could the church have become so miserable, poor, blind and nakid? Certainly that Church had Preachers and manuscripts.
Christ's advice to the Church at Laodicea.
18 "I counsel thee to buy of me gold tried in the fire, that theou mayest be rich; and white raiment, that thoumayest be clothed, and thatt he shame of thy nakedness do not appear; and anoint thine eyes with eyesalve, that thou mayest see."
This church didn't need just Gold tried in fire, but even clothing, because they were shamefully nekid, and they also needed eyesalve because they were blind too!
Also consider how the Lord first addresses the Church at Laodicea.
Revelation 3:14 ..."these things saith the Amen; the FAITHFUL AND TRUE WITNESS, the beginning of the creation of God;"
The church at Laodicea became carnal for a reason.
KJVo types are a very small portion of the Christian world. I don't personally think that the Laodicean Church would refer to KJO types.
The problem is too large.
Look around, Heat, plumbing, food galore, no persecution, it is almost unreal how great life is today.... But maybe with same eye-salve we can better evaluate our condition.