Letters to the Editor was ye olde print version of comments and it worked. Let’s not throw out the baby with the bathwater. The letters added customer written content, but via a human editor.
Investigative journalism is what the FT is known for. It is an old fashioned idea, but it works. One cannot imagine an AI robot doing investigative journalism. Human journalists using AI might work and might leapfrog NYT - New York Times - who employ human editors as a gate to comments; this works but is expensive.
Or maybe the FT could moderate comments via an algorithm, similar to how Hacker News does it.
What do you think, human editors or an algorithm? Or is there another way?