The ship has really already sailed on longform communication, perhaps out of laziness or cost/benefit.
Part of what we're seeing with the automation going on is giving ordinary people some semblance of what the elite have had for a long time: administrative assistants/personal assistants. "Take a memo for me, write up an invitation letter and send it to my wife's sister" For much of the uber powerful and wealthy, gruntwork communications have taken the original person out of the message.
We could argue whether or not everyone getting their own AI admin assistant is good or bad for society (will everyone just have their assistants talk to each other, and no one will talk directly anymore?) But I must admit, I hate dealing with non-friends/family in communications that involve transactions. There's nothing I hate more than having to book stuff, call customer service, or write emails to service departments.