I learned that a) there are folks that would continue to to use the noindex flag to not get indexed by Google, but they’d be fine being part of a “scoped to a user’s timeline and no one else” type of search (I too fell into this category at the time)
I mean, okay, cool, but I personally am fine with popping up in generic search engines and am not happy about my stuff being folded into more app specific UI. In the absence of specific communications, you get to decide whether to be careful about consent or to care about the utility of what you’re building, and, well….