No, one needs to be confronted with facts to get them outside their comfort zone. If I were to say, to someone who is faking, hey that is NOT what I said, you misinterted me without proof of what I really said. They would come back with a lame, well that is what God wanted the people to hear. But, If I approach that person with, here is exactly what I said, and here is exactly what it is, their best retort is to stay silent and run for the hills. If they are doing it out of pride, then confronting them with the truth is a waste of time. But, if they are following the crowd, then the confrontation puts them outside their confornt zone, and they will have to think things through, and make a choice. I think God is trying to call people out of the pentecostal movements because frankly he is not pleased with their false worship. Yes, faking tongues is false worship, think about that.
And, No I am not accusing you of pride because frankly, I never met you in person, nor seen your behavior.
As for the body being burned thing, Paul is simply using an exageration. Just like, speaking in the language of angels is an exageration.
1 Corinthians 13
1 I may be able to speak the languages of men and even of angels, but if I do not have love, it will sound like noisy brass. 2 If I have the gift of speaking God’s Word and if I understand all secrets, but do not have love, I am nothing. If I know all things and if I have the gift of faith so I can move mountains, but do not have love, I am nothing. 3 If I give everything I have to feed poor people and if I give my body to be burned, but do not have love, it will not help me.