You probably know this already, but in the London Confession of the Baptist Faith, it reads III. Infants dying in infancy are regenerated and saved by Christ through the Spirit;[10] who worketh when, and where, and how He pleaseth;[11] so also are all elect persons, who are incapable of being outwardly called by the ministry of the Word.

As you can see, it omitts the word "Elect" as it shows in the WCF. Basically my point in mentioning this is because what Mohler says is in keeping with what the London Confession of The Baptist Faith teaches. Also as what I said in my other post Spurgeon also taught that. (At least that is my understanding of what he taught)

This is one of the reasons why I like to check these kind of things with Scripture. This is one issue that I agree with the WCF over our Baptist confession.
I however am not the only Baptist that feels this way however.