This message is not accurate IMO.

Basically, if the addon wants to interact with any kind of urls, this message is unavoidable. Which means that even if the addon doesn't require to access any data of the websites, as long as it wants to be triggered for any websites, this message is not going to be avoidable.

https://extensionworkshop.com/documentation/develop/request-... has more information.

The new Edge is based on Chromium (Uses Blink as the engine), so I don't think it will challenge Google on things like Manifest v3.

But GeckoView still uses Gecko, it's not like a new engine which built from scratch. It's like a wrapper of Gecko, which removes a bunch of things from Gecko.

> which removes a bunch of things from Gecko.

Not exactly; GeckoView is a clean interface for embedding Gecko in Android applications.

I wondering if you aware the profiler tool that FF has https://profiler.firefox.com/

I somehow managed to miss that, thanks. It looks exactly like what I needed.