I don't think you're wrong or unreasonable for resenting them.
However, it's not likely to help. I know how desirable it is want neglecting parents to at least show some sign of remorse, to genuinely care, to have that part of reality recognized by those who hurt us and have them change, but it's unlikely to happen. Even if it did, it likely wouldn't be as healing as expected and they'll be the parents you want and deserved, at least from my experience having my father apologize to me in my mid-thirites.
You have to consider no contact from whether it will improve your wellbeing, not how it will affect your parents. That affect is not something in your control. How will you feel not dealing with them again?
If it was the other way round, a young adult leaving their parents to follow an opportunity and live abroad, you wouldn't be getting told that was selfish, you would be getting told you have one life, live it, see the world, cut the apron strings, they can't guilt trip you into staying . This is just the reverse of that, but I don't see that it's particularly selfish.
Maybe it's because I was 17 when I immigrated, but I really don't see that as a reverse. A 17 year old has no legal responsibility to care for their parents, has no ability to enter contracts or do many of the actions required to do so, they're not the ones who've tied an apron string to anyone. The power dynamics between parent and child cannot be reasonably flipped when the child is still a minor, if at all.
Also, the legal situation around that has changed and many countries will not even allow a 17 year old to visit without parental consent anymore, let alone move. It's recognized as a pretty high risk thing to do at that age. Few 17 year olds would be encouraged to move out on their own with things as they are unless there is something majorly fucked up going on with their parent(s) and I think most would not encourage a 17 year old to try to move abroad with the intent of it being indefinite. A trip or gap year with clear plan, yeah though I think most will still encourage them to wait until at least 18, but immigrating indefinitely at around that age, even I view that as extreme and risky. I was just lucky I had non-parental support here and it didn't bite me in the ass.
Even taking the idea that them emigrating was okay because they have one life and opportunities, there are many many ways they could have handled that better. Wannago gave some great examples of ways to support a teenager where circumstances mean them being home along for a significant period of time. There are situations where that's the best plan, but support has to be put in place, not having a 17 year old who hasn't chosen to move out and told to stay on in their education have to find a way to eat. Calling a minor a 'young adult' doesn't change it's a kid being neglected and being told I was "old enough" by adults is something I'll always remember with disgust far more than my father spending weeks hundreds of miles getting his rocks off and getting high.