What feels "dumb" about it?
Is the perception of others towards you when you do this? Because that ship has sailed, people Vlog on the sidewalk and do TikTok videos in the subway, and Facetime their mom or brother at the grocery store or in the mall and have long video conversations with each other out loud..
I'm not saying this to be dismissive. As a GenX'er it took me a while to normalize this behaviour even to myself, but I've accepted now that these kinds of interactions with devices are just everyday occurrences and literally no one cares.
They can be obnoxious for sure, but just using TTS/Siri on your phone is like the nicest version of this interaction I can imagine. ;-)