Website says "native" but it's an Electron app.

Is it possible that the [x Telemetry] [x Electron] and [x Subscription] means that the app does not have those things?

If that's so, it's really poorly communicated. I strongly recommend full sentences for that.

it's exactly that, just less good choice for webUI, it was not clear to me at first either

I second this. To me the styling looks like tags and conveys the opposite meaning.

* noted

It is not electron. Look at the source code.

The bullets appear to be suggestive tags not an inverse-feature list. Which is the confusion, perhaps changing the “x” to a red or “cancel” symbol (circle with line through it).

"Non Features: No Electron. No telemetry. No subscription."