She was 17-18, overworked by waking up before sunrise and training, performing, put on a smile to meet with fans, sell merchs, repeated for I think a year. All that in a foreign land and being stalked and targeted for grooming by literally JP schizo pedo. Then ended up getting fired from the group because that pedo threaten to reported her agency for hiring foreign worker (the details are fuzzy but that's the gist of it). During her time in the industry, she legit see some fuck up idol shit, like girls being pressed into doing "favor" for their managers. I'll give her a little break for being a bit disillusioned and salty about the whole experience.
Hell, the interview is still there out in the open,
read it and judge for yourself.