It appears that Allam's primary concern is to be associated with a potent and effective vehicle for confronting Islam. That's not a great reason to become Catholic although it may be a praiseworthy temporal objective. The Church
has confronted Islam at various points in history and may well do so again but we're here for one reason; the salvation of souls. It's the Church's job to light the road to salvation and to provide us with the spiritual means to walk that road. Those who join the Church for reasons not directly related to this project will eventually fall by the wayside, as it appears Allam has.
As those of us who've been tortured by 50 years of post-Vatican II lunacy can testify, one carries these crosses and perseveres, sure in the faith that the Church is the bride of Christ, despite the human vicissitudes which constantly beset it.
Catholics “dialog's” with Islam, so far as I've noticed, seem to entail “Catholic” liberal academes accepting large sums of cash from Saudis for promoting “tolerance,” while ignoring islamist oppression and violence and dissing anybody who complains about it. I do hope Francis has a better idea.