Seriously, a use case where LLMs really shine: bullshit padding. It's quite amazing to be able to turn ramble into coherent text. The less obvious tax is that if you don't put effort you will never be able to learn how to write and that will most likely affect thinking too. Writing will remain a valuable tool for improving thinking though, but likely for a lot fewer people.
I suspect we'll start to see people asking for more raw bullet-points for certain communications, because all the text they used to use to guess engagement/thought/investment/care is debased from easy counterfeiting.
In some cases that'll remove something that was always a questionable waste of time, and in other cases it'll represent a real loss of information.
