You need a bit more realism in your thoughts. The general public doesn't read release notes. I would bet you most tech literate people don't read release notes. Release notes tend to be read by people specifically interested in that type of subject matter. Pro tip: If the term "release notes" is part of your defense, you've already lost.

It's like expecting someone to read the car manual to diagnose an electrical problem. The likelihood of that happening is next to nil except with someone who is specifically interested in cars and dyi auto repair.
Don't get me wrong. The feature is nice. It can be helpful. It should have been opt-in. Opt-in allows the consumer to make a conscious decision that could affect their cellular service. Default on allows for situations like this class action to occur.