But Obsidian is Electron, right? Not a native app?
eg. native Outlook - ~200-250MB RAM use, same email open in Outlook Online-based New Outlook/Project Monarch: 400MB, and Monarch isn't even Electron but a supposedly lighter architecture.
Microsoft To Do (UWP): ~100MB
Todoist (Electron): 300MB
The RAM usage adds up, especially on older hardware.