Desktop app development with Electron

Yes. It is mature, has a huge ecosystem and gives the same result on all three systems because it carries its own engine. Its price is weight and resource use. For an app that already exists, maintaining it is usually the sensible thing; for a new one, we compare with Tauri before deciding.

When installer size or memory are a real problem for your users, or when the app needs a faster or safer core. It does not pay off if it depends heavily on Node modules with no equivalent, or if what exists works and hardly changes.

Not for being one. The risk lies in old configurations that give the window direct access to the system and in dependencies left without updates. With the window isolated, a scoped bridge and dependencies up to date, it is as safe as any other desktop application.

Electron ships major versions several times a year and only maintains the latest ones, because it follows the calendar of the browser it carries inside. An app that falls behind piles up unpatched security bugs, so it is worth having an update rhythm, even a slow one.

Yes. Node.js supports native modules and Rust is a good way to write them: they are compiled for each system and the app uses them like any other library. It is a common intermediate step before a migration, or instead of one.

Often, yes. Deferred startup, fewer open windows, heavy work outside the interface and lighter dependencies give room. The first step is to measure; sometimes that is enough and the migration is no longer needed.