macos – Disable Mission Control in Big Sur

I would like to completely disable Mission Control in Big Sur. If there is a way to stop it from triggering when I drag a window to the top of a screen that would also be greatly appreciated. I’ve disabled all options in System Preferences aside from Displays have separate spaces, which I would like to keep for other reasons.

It appears that defaults write com.apple.dock mcx-expose-disabled -bool TRUE && killall Dock used to work, but no longer does. Please tell me there is some way to disable this annoying behavior. Thanks.