Yeah but like I said, people make mistakes. The thing about text output is that it's impossible to track if people are using it at first. You can measure button clicks and key presses. You can't measure eye gaze (at least not usually!).

The good news is, if you remove it and get complaints, you can measure complaints. If you put in a toggle to re-enable it, you can measure how many people activate the toggle. Then you actually have the data, so you can decide whether to just bring it back entirely, or keep it as a toggle, or what.

PM's and designers aren't omniscient. If a feature is view-only, you literally can't tell how much it's used, and it might be minor enough that you never ask about it in user interviews.