I thought her glitch shit made her annoying. No one tolerates players who use blatantly cheap broken ass characters in videogames. She's just a Mary Sue in videogame form and her glitch shit should have still gotten her game taken offline.
Anyway, Vanellope is indeed as you said a very unlikable annoying character because of her nature. She also derailed the whole movie into being about her and getting her way. Being voiced by the annoying Silverman Jewish cunt also doesn't help. In the end? Not watching Wreck It Ralph 2 because the original movie wasn't very good at all and Vanellope is the central reason for that. And sadly Wreck It Ralph 2 will still include this annoying Scrappy Doo brat.
The worst part is how popular she is with normies. Fuck. All a female character has to do to be popular is be an unaccountable nuisance of a bitch and that's it. Women love it because it reminds them of themselves and most guys love it because most guys are retards for pussy.