[sinkspur]

Believing in apparitions is integral to Catholic belief

This is not true.

Apparitions are private devotions, and are not integral to Catholic belief, in any sense.

[LiveFreeOrDieAmerica]

Approved apparitions - such as Fatima - and LaSallette (i.e. the Immaculate Conception) are more than simple personal devotions (like a sacramental), they are confirmed by the Church, and sometimes guide it (as in the case of the Immaculate Conception dogmatic definition). To deny this - or cast dispersions on approved apparitions - is putting yourself above Holy Mother the Church - a position you do not possess regardless of your delusions.