What is going to happen if people start to increase the length of emails and laws (luckily privacy stuff are being reduced in Europe to be more easily understandable by non-lawyers) to the point where it's like a book, imagine people stop to read them at all, and just use LLMs to ask questions directly, which can still marginally give wrong answers.
It's like bypassing human limit of time, because now people can read few books in like 10-20 min, and so everything can increase too.
The way out of this is to make it acceptable to send emails that open with a polite greeting and then just outline their message in bullet points. As long as they're intelligible and not outright rude, emails really don't need to be a writing contest.