It's 100% true, beyond a shadow of a doubt. Not only did it go to court, Apple admitted doing it and paid over $100M in damages.
https://www.npr.org/2020/11/18/936268845/apple-agrees-to-pay...
https://www.npr.org/2020/11/18/936268845/apple-agrees-to-pay...
I don't care what Apple's PR said, the court found that the AG complaint of "Many consumers decided that the only way to get improved performance was to purchase a newer-model iPhone from Apple, ... Apple, of course, fully understood such effects on sales." was correct and that Apple had to pay up.