No problem, I'm happy to relay my opinions!
The flat earth comes to my mind as one of those particular theories that can be debunked rather easily and is sort of forced into the conspiracy world to distill all the other countless reasonable theories. Seeing it in this way, it casts doubt on all other conspiratorial concepts since flat earth is just so outrageous. In my opinion it makes people who are new to this topic to hold preemptive doubt consequent to other theories since flat earth gives such bad rep. My 2 cents :)