"Is Matchett correct?" I have never heard her say that. The more important point, however, I have never heard her say anything against sound doctrine. His attacks against her have been unwarranted and unproven.
Perhaps Matchett-PI hasn't proven anything to your satisfaction, but this does not automatically mean that severe criticism by Matchett is unwarranted. Maybe Matchett has identified things about Joyce Meyer which you and I haven't seen.
Concerning your #295, I am prepared to stipulate that Meyer is "basically orthodox," --based on the criteria which you are implicitly asserting, of course--but this is beside the point.
What I am saying is that a little bit of really nasty leaven can ruin the whole lump. This is how Satan fools people very, very badly. He mixes a little bit of error with a lot of truth.
So, I am urging you to be careful. Some of the favorite Bible teachers in Christendom are bad in very surprising ways.
I am aware of how Satan operates. It is as you have said, a little lie mixed in with truth--he is the master deceiver. I always make it my business to ensure that the words I hear spoken accurately reflect the Word of God. And as I have said, I have not heard Joyce Meyer yet utter anything contradicting scripture or sound doctrine. If and when she does, I will weigh it against what I know to be true and search the scriptures again, something she also encourages her listeners to do. If she is affiliated with the likes of Kenneth Copeland, and Benny Hinn, it would concern me; if she starts preaching their gospel instead of Christ's, my concern would turn to acknowledging that she is no longer preaching Christ and have nothing more to do with her. But as I said, this "preaching another doctrine" has not come to pass.