If you think long term, the safest choice today is still web.

Yes Electron is not perfect but you can decide to ignore the market of anti web users complaining about Electron running slowly. They are not that many outside IT social networks and rarely your customers. The alternative to an Electron app is often no app, especially on Linux. And the performances and the user experience is totally fine on recent hardware. In a few years, all users will have hardware powerful enough to run Electron smoothly in my opinion.