It really depends on how you define the traits of autism. Traits like "difficulties in social communication" are a big part of ASD profiles, but a condition like ADHD can also lead to problems in social communication for entirely different underlying reasons. Basically any complex human capability can go wrong for a variety of reasons, and completely different conditions can lead to quite similar problems, just because those problem areas require that everything is running together smoothly.
That said, I did an autism screening as part of my adhd diagnosis, and came out with 0/40. I joked, "oh good, so I guess at least I'm normal in that area" and they replied "uh, normally people get around 10-15/40, 0 is pretty rare". So I guess I'm pathologically un-autistic.
With any addiction or habit you want to change the most important part is not expecting it to just be done with, however hard you try. If you want to stop looking at porn all the time, then becoming someone who struggles with porn, and still breaks every couple of weeks is a big step. If you can keep that up for a longer time you might start being someone who breaks every three weeks and so on. What's tempting is to say "I can't do it, so why even try" and just give up.
Also, it's up to you why you want to stop a habit like that. Being conscious of your reasons and motivations can make it a postive step (whcih is easier to motivate) rather than just something you're preventing yourself from doing. When I was giving up smoking, it was helpful to think about postivies (breathing easier, having more energy, not stinking of smoke) because when I felt stressed and wanted a smoke telling myself "no you shouldn't" wasn't motivating.
It can also be helpful to identify the steps that lead up to a difficult decision point. If you're not wanting to look at porn, but you find yourself thinking "but I'll just look up some innocent pictures of blahblahblah, that's not porn, that's okay" and then suddenly you're in a situation that requires much more willpower to not fall down the rabbithole.
Good luck!