People who are socially inept certainly are more likely to spend more of their time thinking "inwards", like an introvert. On the Internet being anonymous sheds many of those social barriers that existed before, making it possible for them to more freely express themselves. If you spend more time doing something you usually become better at it. I would not say that it automatically means that your political beliefs are more "correct" but rather that you are better at expressing them in text form.
Armchair-psychologist signing off.