Jesus Christ is the King, the Master, the Savior, the Meaning and the Purpose. His name is the most powerful one of all. No man but Him could ever bear the fullness of His light. He distributes according to His plan.
No servant of the divine has any right to point a finger and judge another's position in salvation, it is not our place to know! In my experience, I am not to ascertain one's degree of salvation, only to add to whatever truth they possess or to add to mine from theirs.
We do not do this work! We convert no one. We plant the seeds, if you could even say that, as the Master is the gardener and we are the branches. He sows and we reap. Should we despise His work and question His determinations? Goodness, no!
Do not fret! Have no fear! We must withhold our condemnation for its impotence unless it is directed at the guilt within, unless it is purposeful to highlight our position in relation to the Master. The unsanctified conscience would do well to turn inward in order to uproot the lies which confine it.
Look at the Master, listen to His words, hear His voice, the Bible is His glorious and flawless message! He is here, He is there, He is in complete control and lacks nothing. What will our temerity in despising sin accomplish? Nothing at all if it is pointed in the wrong direction.
Don't worry about someone else's eternity. Don't worry about someone else's truth. Seek only the Truth, the whole Truth, and nothing but the Truth. And God will help.