Make the window title less chunky in big sur
good news, the chunky bars problem is being worked on: here's MEMiniMe.
it needs macForge, and it isn't working on mac m1 yet as far as i know, but hopefully ..soon.. we'll have a solution for these horrible fat bars.
defaults allows you to set some "hidden" settings for the window style. At the moment I only found one that allows you to go back to the old toolbar style with
defaults write -g NSWindowSupportsAutomaticInlineTitle -bool false
If there are other NSWindow setting in Big Sur then they may be listed on macos-defaults.com in the future.