Would you also say that we have absolutely no way to confirm that Facebook managers know how addictive their apps are for children? I’m pretty sure that just a few years ago cynical people would say that. But only a couple of days ago this was proved in the court and Facebook lost the case.

So yeah, I believe that taking the company’s word for it is generally a winning strategy, and that blatant violations are relatively rare. Here, MS has a lot to lose and not much to win.

To mirror your question: do you really believe that a significant fraction of users will uncheck this checkbox?

Personally, I think only a few percent will do this and Microsoft does not care about losing their data.

You guys are having own hostname in hosts file?

I think it has a narrower scope, a standardized way to access data for applications which are simply delivered over Internet. As an example: “I want to have a diary editor, but I don’t want to download and install a local app, and neither do I want some external server to access my diary text”. Then you get the running code as a PWA, but the data never leaves your computer (or other trusted storage).

Here’s what I meant https://support.mozilla.org/en-US/kb/end-of-support-firefox-lockwise

I thought Mozilla also has a separate app for passwords