"There are plenty of plausible situations where the infrastructure of civilization is gone, but the relics could still work - given enough power (massive global "super-Ebola" outbreak, for example)."

If email still works, somebody will surely click on an attachment containing the eBola-virus and we'll all be doomed.

"...learn what these people think, and if possible debate them."

They obviously don't and ergo you can't debate with people who call your every argument "invented by the devil to test their faith".
It's a complete waste of time.

"Seriously, the best way to combat something like this is to just ignore it. Showing up to cause a scene and throw rotten fruit just gives them a reason to think their ideas are a threat."

Ridicule is always the best weapon. Nothing is as feared by the zealots as ridicule.

Especially since they make it such easy.

"Disagree with personal views that are neither testable nor impacting your rights to your own views in any way."

My views? If I have to travel to England to get a late abortion or other idiocies, it's more than a 'view' that's 'impacted'.

"Why isn't there a designated place for bullshit like this?"

There is, it's called mental Institute, psychiatric hospital, bughouse, funny farm, insane asylum, loony bin, madhouse, nuthouse, bedlam, booby hatch, funny farm, laughing academy, psycho ward, snake pit, rubber rooms, and a few others.

Such a success is nothing to sneeze at.

"Slashdot take down this article (Score 0)"

You must wait until you have a -1 rating, otherwise you have had no damage to your feelings.

Just watch 'Predator' how the guy uses the minigun.

"Have you ever tried hunting and pecking on a miniature keyboard that's been crammed onto a smartwatch's tiny display? "

Smartwatch? You young whippersnappers, you don't know what 'tiny' is.
We had Casio Calculator watches in the eighties.
Those had real tiny, real hardware buttons that had to be pushed hard.

And now get off my lawn.

"illegal downloading music, movies and books."

Since I only download TV-series, I'm still a prime candidate for them, good to know.

Ooooook!

Hundred of Bombs have been exploded via cellphones, is it really that more 'modern' if it's done via SIP or Skype?

"STOP THE VIDEO ADS SLASHDOT!"

If you are unable to stop them yourself, you should be on Digg instead.

Doctors give placebos to deathly sick patients all the time for research purposes.
Patients agree beforehand just as FB users and those aren't even (that) sick.

'Must be "stultia gravis" cases'

"Did you mean stultitia gravis? (extreme stupidity). Kinda funny which word you'd misspell when trying to appear superior to the masses."

I was using the Facebook spelling. :-)