Earlier quoted context omitted.
If the user is determined, they'll press on and discover it, as I and others have. If they're not, then they won't. Perhaps a drop in discovery/engagement suggests that using that feature wasn't as vital as others thought it was?
I'm not interested in subjective arguments but one clear thing is that there is a significant number of people who don't have a good sense of discovering tech features.
Edit: And perhaps this is more of my ignorance speaking, but failing to understand subjective interests feels emblematic of a broader issue around people being addicted to algorithmically-generated content, or being glued to their phones. There's less interest in understanding what someone actually wants to "discover" and "engage with" and more interest in just ensuring we keep them engaged regardless. That feels... ick? But again, this is ignorance on my part, so perhaps that sentiment is misplaced.