Once every few years they find a suspicious polyp and snip it of / cauterize the wound, all with just local numbing. Still nothing worse than stubbing a toe, and certainly not worth the risk of using sedatives.
I can understand if some people want sedatives, but anesthesia is pretty high risk like you were saying.
"Not a single shred of evidence to be found" -> "I didn't actually look but like telling people they're wrong lol"
If you want to come into a thread telling people that are already apprehensive about a procedure "please don't do X its dangerous!" when an _actual_ first google will give you a Mayo Clinic saying its perfectly fine, then you need to provide some fucking evidence.
Your evidence is unconvincing, but good job being condescending.