They know what people type into their tools, but they don't know what in the output users read and focus on unless they're convening a user study or focus group.
I personally love that the model tells me what file it has read because I know whether or not it's headed in the generally right direction that I intended. Anthropic has no way of knowing I feel this way.
But you have no idea if they've convened user study or focus groups, right?
I'll just reiterate my initial point that the author of the post and the people commenting here have no idea what information Anthropic is working with. I'm not saying they've made the right decision, but I am saying that people ought to give them the slightest bit of credit here instead of treating them like idiots.