The thinking is that Electron might be stickier since it'll live on the user's computer so they'll encounter it more often — whether it be on their desktop, mac launchpad, or windows start menu.
Is this thinking flawed? If you have any other thoughts about Electron vs. Web Apps, I would love to hear them as well!
Also, many apps these days are web-based, so I'm not sure why having a shortcut in your start menu would be any "stickier" than having a bookmark in your browser's bookmark bar. A web app would be accessible from all the user's devices, not just the one it's installed on, making it more likely to be used.
And if you unnecessarily make something a desktop app when it could be a web app, you'll annoy your users by using up their disk space and RAM and wasting their time waiting for installations every time there's an update.