Always show directory icon on Finder on Big Sur
You can revert application toolbars to their 10.x look by setting NSWindowSupportsAutomaticInlineTitle. To set this for Finder, use com.apple.finder as the domain.
Disclaimer (from the comments):

I always wish “killall Finder” had a disclaimer. It’s safer to log out and back in since killing finder can interrupt copies, spoil mounted share and other such items... they are clearly edge cases...

defaults write com.apple.finder NSWindowSupportsAutomaticInlineTitle -bool false
killall Finder




From my answer to a similar more generic question: Revert UI on Big Sur?