I know some Christians think that about John MacArthur, as I've read about it. But I've heard no evidence of that, in the preaching messages I've heard of his, online. I believe repentance is necessary, in order to get saved. And that one should be willing to let God be Master of their lives, before they make the decision to accept Jesus as Savior. But I agree it isn't possible to get saved by good works alone - one must first accept Jesus as Lord (God) and Savior of their life, first.
Acts 2:38
38 Then Peter said unto them, Repent, and be baptized every one of you in the name of Jesus Christ for the remission of sins, and ye shall receive the gift of the Holy Ghost.
KJV
Acts 3:19
19 Repent ye therefore, and be converted, that your sins may be blotted out, when the times of refreshing shall come from the presence of the Lord;
KJV
The thief on the cross, who repented and became a follower of Jesus, is one good example that no more is required but repentance and accepting Jesus as Lord (God) and Savior - is all that is required in order to get saved, at the point of conversion. But if it is a true conversion - works (sometimes called "fruit") will follow, the Bible indicates.
I looked in Youtube just now, with search terms of "John MacArthur lordship vs. works" - and listened to the message some. I didn't hear anything he said that I saw to be error according to the Bible. He mentioned this verse, and I agree with it as Jesus Himself said that surrendering to God in order to get saved, is necessary:
Matt 16:24-25
24 Then said Jesus unto his disciples, If any man will come after me, let him deny himself, and take up his cross, and follow me.
25 For whosoever will save his life shall lose it: and whosoever will lose his life for my sake shall find it.
KJV
This is that message I just now listened to: