I think most people want to talk and have only the person they are talking to listen.
hmm. You talk to your coworker about some juicy gossip in cafe next to me. I have to put lead in my ears? and who cares about people with different languages, hearing difficulties etc etc...
I think the times someone has something to say that is so sensitive they don't want a record of any kind kept, are rare unless you are a clandestine agent or military - and it's probably worth just asking those in literal earshot "Hey, I need to tell you something off the record, please make sure to turn off any AI transcription or similar."
IDK about you but most of the shit I say, I'd be happy for the hearer's assistant to be listening and potentially adding the things we agreed on to their to-do lists or calendars.