> In this case, yes.

No, not in this case. It does not matter that Ubuntu and KDE are the two biggest desktop Linux vendors, because (1) their telemetry (and, more generally, spying) are in a different league from Windows', and (2) users are capable of choosing to use another distro - a luxury you don't get with Windows.

> This is a minor detail and I don't think it actually matters.

For almost everyone, except possibly you, this is a huge point. Opt-out and opt-in anything are completely different, both in a conceptual sense, and in an actual privacy sense. On a conceptual level, opt-out vs. opt-in defines the normal behavior or expectation for a thing - Microsoft wants you to believe that it's normal for lots of your (potentially-)private data to go to them. On a practical level, many users aren't aware of (or change) the settings, so opt-out vs. opt-in significantly changes the number of people who actually receive telemetry.

Here's a thought experiment to help you understand how important opt-in vs. opt-out is to most people - how many unhappy people are there that organ donation is opt-in - or opt-out? What if you made college opt-out - and got billed for the first semester even if you didn't attend unless you cancelled? What if social security payments were opt-in, or legal rights as an adult, or protection by civil or criminal law?

> This has nothing to do with the implementation.

Red herring - we're not concerned with just the implementation, we're concerned with Microsoft's behavior as a whole, and whether telemetry as a whole is different between Windows and Linux - the answer to which is a resounding "yes", because the exact same data going to Microsoft is far more likely to be exploited (not for the user's benefit) commercially than data going to the KDE foundation. So, sure, it's not related to the implementation - and that's irrelevant.

> That sounds to me like a bug or glitch that someone should fix. Ubuntu or KDE could also manifest such bugs, I guess we're just lucky they haven't.

This issue has been around for years and noticed by thousands of people on the internet, so if it's not intentional, then it's gross negligence, signifying a complete lack of concern for user privacy...that is not shared by Ubuntu or KDE. But, given Microsoft's past history of user abuse, compared with KDE's non-existence history (and Ubuntu's questionable status), it's rather more likely that it's intentional.

> It's possible to change that. You can just read the Ubuntu privacy policy that I posted. Windows also has a similar privacy policy, you should do a search for it if you're interested.

A snide and absolutely useless reply. My point, which you conveniently missed, was that I don't understand what Ubuntu or Microsoft collect because their privacy policies are obtuse, not because I haven't read them.

If you were actually concerned about seeing what data was collected, you would have read the Ubuntu policy and then seen that it does not make clear what data is collected. For instance, on that page, there's a sentence: "Canonical may collect non-personally-identifying information of the sort that web browsers and servers typically make available, such as the browser type, referring site, and the date and time of each visitor request." ...that doesn't enumerate the complete list of "non-personally-identifying information" collected...and all of that applies a hundred times more to Microsoft and Windows, with Canonical being exceptional in being this bad for Linux distros.

I also noticed that you didn't include a link to the Microsoft telemetry privacy policy. Perhaps that's because you weren't actually able to locate it yourself, just like I wasn't? For instance, let's search for "Windows Telemetry Policy" on DDG[1] - none of the first-page results are what we want. Meanwhile, "KDE telemetry policy" returns the document you linked and one on their telemetry philosophy on the first page. (I couldn't find anything on the Ubuntu telemetry)

Meanwhile, if you were to actually go and read the generic Microsoft privacy policy[3], you would see that it is so vague as to not allow you to understand what is actually being collected - like I said.

> Actually I have not done this, I mentioned they're different, and I explicitly explained how you shouldn't be afraid, uncertain or doubting anything.

Except you didn't - you made vague false equivalences meant to try to portray Linux telemetry as being similar to Microsoft telemetry (even though you couldn't actually provide the technical details to back it up), meant to instill fear, uncertainty, and doubt in Linux by trying to associate Microsoft's brand of "telemetry" with them. You also didn't explain away any worries about Microsoft's telemetry itself.

[1] https://duckduckgo.com/?q=windows+telemetry+policy
[2] https://duckduckgo.com/?q=kde+telemetry+policy
[3] https://privacy.microsoft.com/en-us/privacystatement