But Obsidian is Electron, right? Not a native app?

It is indeed Electron, but it has a much better linking story. Evernote being a native app was the last thing the held me as a paid customer with them. Also, the move to Electron was quite bumpy, they simply dropped half the features and it didn't recover until well over a year into the migration.

Yes, but comparatively lightweight for being one. The devs don't use large frameworks like React and write pretty barebones JS. It shows.

What's the beef with Electron?

Usually high resource use - more RAM use, using the processor more while idling, etc. and usually poorer integration into the OS in terms of look and feel and in terms of actual integrations.

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.

Can Obsidian record voice notes?

There's a plugin for that (trademark icon) https://help.obsidian.md/Plugins/Audio+recorder

Any way to import or view things to archivebox on mobile?

I have an Apple Shortcut to append a shared URL to a request https://domain.xyz/add?url=$sharedUrl

To view things is trickier. But the Readability and Mercury destinations render best.