I understand the "UI" version of my VSCode settings gets synced to my GitHub account, but when I manually customize the settings.json file do those changes get synced as well?
I understand the "UI" version of my VSCode settings gets synced to my GitHub account, but when I manually customize the settings.json file do those changes get synced as well?
Every change you make in the settings UI modifies (or adds/removes) a line in your settings.json file. Essentially it is this file that is synced to your GitHub account all the time.
To be sure, open the Command Palette (Ctrl+Shift+P) and run the Settings Sync: Show Log command:
The log shows every sync action.