To me the whole Revelations thing sounds like a bout of ergotism. There is a correlation between the rye bread diet of the impoverished living in damp climates vs wheat eaters in realtion to mythologies.Lot of similar stuff around Y2K too, though much of it was less overtly religious and more about a massive global failure of automated systems, which really would have been apocalyptic.
There’s a real danger in end time religious beliefs though. If enough people buy them, particularly people in powerful positions, they may do nothing to try to prevent such events or even actively cause them in the belief they’re doing god’s work, making the prophecies self-fulfilling. A U.S. president claiming he was chosen by god to lead in a troubled time was pretty alarming. Then there’s the Christian Zionist loons in Texas trying to breed the perfect red heifer, considered essential for the ritual purification of the Third Temple that has to be built to get the last days properly started in some versions of the prophecy.
There’s no idea so dumb that nobody will believe it.