I wanted to stop the Obsidian editor cursor from blinking. Something like VS Code’s

    "editor.cursorBlinking": "solid"

Some searching turned up an option to solve this problem in Vim mode using CSS, but in insert mode, the cursor still blinks. Eventually, I came across a macOS-based approach to solve this issue on StackExchange, included here for convenience

defaults write -g NSTextInsertionPointBlinkPeriod -float 10000
defaults write -g NSTextInsertionPointBlinkPeriodOn -float 10000
defaults write -g NSTextInsertionPointBlinkPeriodOff -float 10000

After running, restart Obsidian and the cursor no longer blinks. These configuration changes also disable cursor blinking in other applications, which for me, is a welcome change.