Much agreed. So let's keep in mind that lexicons and Bible dictionaries don't fall from heaven but are written by theologians who have their own bent in pushing certain doctrines their way.
Thayer's is not a lexicon, it is a English-Greek dictionary that coincides with Strong's Numbers.
For instance, Jesus makes "eternal life" real easy to understand. He says, in John 17:3, that eternal life is knowing God and knowing himself, because he reveals God's character. For the author of the gospel of John, eternal life means the same thing as the kingdom of God (in Luke and Mark) or the kingdom of heaven (in Matthew). It doesn't refer to a "place you go to after you die" or to "life after death." It refers to God's transforming presence with us here and now, if we would only have eyes to see and ears to here it.
Nowhere in that verse does it make any comment on eternal life being God's presence here and now. Your interpretation contradicts the two verses preceding it:
Joh 17:1 After Jesus had spoken these words, he looked up to heaven and said, "Father, the hour has come; glorify your Son so that the Son may glorify you,
Joh 17:2 since you have given him authority over all people, to give eternal life to all whom you have given him.
Jesus is saying that those who know Him, and through Him, the Father, are those who have eternal life.
It is Hellenized Christianity that turned "eternal life" from God's will being done here and now on earth (as Jesus taught it) into a future reward located far above the clouds in another "time and place." Jesus stood in a long line of Jewish prophets that believed that God created humans for the earth and that God would redeem it through compassionate, just communities. In contradistinction, many Christians believe that "this world is not my home, I'm just a'passin' through, my treasures are laid up somewhere beyond the blue" and "I'll fly away to my home on God's celestial shore."
None of this information refutes the information I provided.
What does all of this have to do with universalism? For those who hold to everlasting torment, God is unable to redeem all of his creation. Creation is forevermore marred. Jesus did what he could to save the world, but it just wasn't good enough.
Obviously it is good enough if millions of Christians are being saved. Probably billions. You are rewording everlasting torment to say that God is unable to do something: This is not what everlasting torment says, so your statement is a straw man argument. Everlasting torment says that those who reject God get thrown into the lake of fire for failing to recognize Christ for what He was. God will not save those who do not wish it. Romans states that creation is forever marred, as does Genesis, and Revelation says that God will make this new.
Satan, according to pop Christianity, keeps most of humanity in rebellion against God and being tortured by him forever and ever and ever and ever and ever and ever and ever and ever and ever and ever and ever and ever and ever and ever...
Straw man argument. I said nothing about Satan torturing anyone or causing rebellion against God.