He'd still be obsessed over pokémon and sonic, so sonichu and the christory would still be a thing. No sailor moon influences in sonichu, no pony stuff either. Probably would have still drawn porn, but it would have been a previous gal pal or Barb.
Somehow even more disgusted than she was when Chris drew SheCameForCWC.jpeg and tried to excuse it by telling her if he didn't draw it he might have raped her.
Chris simply would have gotten into MLP later than he originally did. Instead of getting into ponyshit before the Brony phenomenon, he would have gotten into ponyshit during the Brony phenomenon. I wonder if Bronies realize Chris is one of the progenitors of their "culture?"
I think Chris would be much worse without the early influence of Megan. She helped him with socialization without having to be paid to do so and (tried) to set boundaries with him. Incest Saga Chris is what we wound up with when a woman close to him says "no" to his pushy advances during the attraction sign era; imagine what he'd be like without her.
I think Megan not being there would not have changed any of the crazy. On the other hand, she would have been spared the trauma of having to live with all this.
I think this would have possibly alter the timeline more than people give Megan credit for. She was the one who got Chris into Sailor Moon and My Little Pony and all that girly 90s shit. I don't think Chris would have been any less of an abject mess and a total weirdo, but I do think the story would have gone in a very different direction.
Also call it low effort stereotyping but without getting into more girly media just to impress Megan I think the odds of the troon saga still happening would at least be lessened.