I noted four separate questions. You incorrectly assumed my position on the first and are now arguing with an opponent you imagined into existence.

Read past the "a)" because those are way more important and may be discoverable.

Depends on your audience. There are people who love ridicule of conspiracy theories, even if they are completely closed off to any conspiracy theory being real.

There is no such thing as "conspiracy theories". "Conspiracy theory" is itself a loaded term used equate any independent research critical of mainstream consensus with the ravings of lunatics. A theory can be:

(1) either confirmed, debunked or unproven;

(2) either originating from an authoritative source, originating from a non-authoritative source, or of unknown origin;

(3) either promoted, downplayed, or ignored by any particular media outlet.

These are, again, three orthogonal axes that you are implicitly, and stubbornly, conflating.

Anyone sensible is not even asking themselves if "conspiracy theories" are true. They're asking themselves where the hell they come from, why are they so contagious, what prevents societies from effectively containing them, and what are the long-term effects on our societies' health.

Or maybe anyone sensible is looking to profit from the confusion, and I'm a raving lunatic... Have you considered becoming one yourself?