How do modernists and modern Catholic "writers" explain the [incorrupt] scapulars of St. John Bosco, St. Alphonsus, or Pope Gregory 10.
Blessed Francisco Marto (one of the 3 Fatima children) was also found to have an incorrupt brown scapular.
As for what scoffers and skeptics have to say, are you somehow impressed with Modernists who deny the Resurrection of Our Lord or the Immaculate Conception of Our Lady? They tried to deny the stigmata of Padre Pio, you know, but that didn't go very far. Padre Pio was no shrinking violet. It probably took him all the resolve he could muster to keep from knocking their teeth out with a quick fist punch.
I would recommend not paying any attention to what apostates say about these things. Whatever they say about incorrupt scapulars isn't going to do you any good, anyway.