Alright, I'll bite. What did they lie about and do you have actual evidence of it instead of assertions?
For one, they throttle phones with batteries Apple techs themselves report as "Healthy" and won't replace. Is that not rather dishonest?
Then there's the accounts of people being told specifically by Apple techs that the battery has nothing to do with performance so any slowdowns just means the phone is slow with the iOS updates. It's unlikely the techs knew so they personally didn't deliberately lie to customers, but Apple didn't think to tell their own techs so false advice was given.