That's not what he's saying. He was doing this writing to communicate with other human beings, and that since that seems seemingly has died off in his community there isn't much point in continuing that.

It's great that there are people that enjoy being a training bot for a corporate product, but some people still want to talk to other people. And if a system ever becomes an AGI, I am fairly sure it will no longer need any human input, so our days as training bots are likely numbered. Enjoy it while you can I guess.