Wow, this is weird. Called the dealer, they say - go to auto glass shop. Talked to one, they tell me they need to order the whole mirror assembly cuz, you know, the metal button is integral to the whole assembly and comes from manufacturer with a dab of the "right" adhesive applied. The dude even tried to make friends with me by teaching me how I can make it more economical by buying a kit from Autozone. Full(or fool's) circle! Apparently some shops are just in business of scamming insurance and if you just pop up with out of pocket expenses they are a bit embarrassed to admit to it. Called another one, who had high rating. A Hispanic guy who works from his garage..... He applied a dab of mystery substance for $15 right there in his driveway. Let's see how it goes.
If you ask me, Honda's idea to glue heavy rear view mirror to windshield is hot garbage.