I'd say that raks are not "broken" in the meaning of OPness, but broken because they fail to complete they prupose. Cheeseketen is the only way to push back its AT capabilities.
I agree with that, its also better at lower elo since double raken can go around and burst tanks down against people who have poorer micro. It also improves a lot with Vet if you can vet it up, however the crew seems to stand ontop of eachother and all die instantly to any arti or lucky tank shell.
Still it sucks to use and sucks to play against.