It could be argued that those characters were warped to fit the JLI book back in the day. None of them acted that way before that book. You can't expect characters like these, ones that aren't used often, to be the same as they were in a book from 30 plus years ago. Furthermore if King had instead made a new character with ice powers people would have complained that he didn't use Ice instead. I'm not saying you have to like the book but you also don't have to look for excuses and try to convince others to hate it too.