I understand your frustration, and reaction to the trolling remarks. Reading your original rant made me cry, because I have felt the same way. But feelings are feelings, you do not have to act on feelings because they are temporary. And I just wanted to remind you to look at the source: these are people who you don't know, who could just be doing it because they do get a reaction out of you. You don't know their motivation and you cannot control what other people say, do, think, or feel. What you can control is yourself. You do have the power to get better at whatever you put your mind to, regardless of disabilities. I didn't learn how to read until I was in the fourth grade, and I have consistently scored terribly in spelling throughout all of my educational experience. And I know I can change those things. I know I can work and work until I get better, because I refuse to just allow other people to tell me that I will fail. Its hard work, and it does hurt when people point out my mistakes and shortcomings. I choose to take those and make myself stronger.
I hope that you can do that too, because I want to have hope for you. I read this right after getting an incredibly harsh and hurtful review on an original project that I have been working on for about sixteen years. The review came from my best friend, who spurred me into writing in the first place. She means well, and she has zero tact. So while I sit down and read her review I cry, because she doesn't understand that she tolls everything, and then I read the review again. I look for the concrete remarks in it the things that I can take away and work on. Truth is no matter what I say she will still call one of my characters evily mcevil pants (grrr...), and I can still choose to look at that and say 'what about this character makes her think that way?'
I'm trying to be motivational to you, and give you the sense that you do have control over this because writing is one of the only things that is completely from you!
Good luck, and I really hope you can use these experiences and make yourself stronger.