SSB was killed after it sat behind an about:config flag, then their telemetry (that most power users disable) reported folks weren’t using. But what average users would be using a setting they would need to poke around to find. It’s a real shame too since I want to say it was PeppermintOS that was largely built around PWAs.

totally agree, but also you can do more with an electron-like app - elevated privileges, less sandbox, etc because the user expects such things from an installed “native” app