https://arstechnica.com/tech-policy/2021/03/att-lies-about-calif-net-neutrality-law-claiming-it-bans-free-data/

AT&T lied about California's net neutrality law yesterday when it claimed the law requires AT&T to stop providing "free data" to mobile customers.

In reality, the California law allows AT&T to continue zero-rating HBO Max, its own video service, as long as it exempts all competing video services from data caps without charging the other video providers. But instead of zero-rating all video without collecting payments from its competitors in the online-video business, AT&T decided it would rather not exempt anything at all.