MacArthur has commentaries and sermons on the Revelation, available online. These would be the surest way to check his position on this.
You all understand that this topic is not a primary doctrine, so any mans position on it is as important as coffee black or coffee with milk. Wise men save their outrage for important things.
Since Jesus tells us that taking the Mark of the Beast means eternal damnation, I’m pretty sure this is an extremely important doctrine.
And to put it in context, Satan’s Mark of the Beast is counterfeiting the Lord’s “invisible mark” on the foreheads of all believers.
To diminish the importance of Satan’s Mark of the Beast and how it is a damnable action if one takes the Mark; and to misunderstand what the Enemy of our Souls is counterfeiting with the Mark... is a hugely problematic issue for the End Times Church.