Also, ace people know about sex. They just don't have much interest in participating in it themselves. When I identified as ace (and I very much was; but sexuality is fluid!) I worked for a BDSM erotica publisher. I knew more about sex than most allosexuals (to the point that when I finally decided this WAS something I wanted in my life, I turned out to be pretty good at it, for a first timer! Turns out it's mostly about listening to your partner and clearly communicating your needs!)
The idea that Laios is asexual and that Laios knows more about sex and sexuality than anyone else *aren't incompatible*. If anything, my own lack of interest in practice meant that I could be pretty coldly objective about editing erotic fiction when other folks got distracted by the sexy!
I can see Laios as the sort of person who would talk about monster penises and vulvas (and cloacas and ovipositors and--) for hours, while people around him get increasingly distracted (or turned on).
Like "did you know fish-men have a pair of organs called claspers, which match with a pair of channels on fish-women, so they can latch together in water and not get separated? Also they're prehensile. Sometimes fish-men use them as a third pair of hands, just holding onto objects... Sometimes I wonder what it would feel like to have sex with a fish-man. Would our biology just make it awkward, or would the dexterity in their claspers make it uniquely pleasurable. I wonder what fish-man semen tastes like..."
^ I actually said something similar about a piece of erotica about a were-shark when I worked for said publisher, because the lead editor wanted to know why the were-shark had two cocks, and I'm like "oh it's biologically accurate"
And yes, ace people can and do think about stuff like "I wonder how that would feel :/a" without actually experiencing sexual attraction. I know that's a difficult concept for allos to grasp.
TL;DR -- I personally think Laios says and knows the most blatantly kinky, weird, and horny shit known to man, while being pretty uninterested in having sex with people. Not disgusted by it or ignorant of it, just. Kinda boring, yeah? Why would he want to do that when there's monsters?
