Probably since her RL counterpart was never able to run in the race unlike say, Golshi, who people criticize/meme that he did nothing but sightsee with his BFF, but at least was able to start and finish the race.
Still wondering exactly which meaning of 掛かり applies to this status effect.
It's a specific horse racing term, referring to a racehorse speeding up in pace without the jockey's input (and then refusing to be reined in). The English equivalent jargon is "rank" or "running rank".
EN Umamusume translates the term as "rushed" which conveys the meaning and nuance pretty well especially to people unfamiliar with horse racing terms.
