There are still physical printed ads on billboards you can't really avoid, as well as all the branding from anything else you encounter in the streets: cars, bicycle, shops, drink coasters at the bar/pub, etc which are by essence advertising. Also many cultural things are full of product placements, all movies, many songs, event sponsoring, etc.

As much as I do to avoid ads (using adblocker, priorizing gemtext caches of news sites, avoiding FM radio and buying my own music) I can't say I avoid it completely.

Billboards are illegal in my state. Can't really avoid? More like they don't really exist (unless I travel).

Branding is not advertising and it weakens your point to imply it is.