For what it’s worth, Vantablack isn’t a pigment, it’s a process for applying carbon nanotubes that absorb light. They don’t sell the “paint” part by itself because it requires special equipment and it finicky. They don’t sell it because then a bunch of social media influencers would try to spray their bathrooms with the stuff and make a bunch of videos about how it doesn’t live up to the hype.
The owner might be a douche who uses the licensing to make himself feel powerful, but there is a justifiable explanation for why the licensing exists in the first place.
Covid masks can be effective, and it’s not as suspicious as asymmetrical makeup or a reflective hoodie. But no, there’s no good way to avoid being photographed in public.