On SU at least we expect questions to be answerable without resorting to speculation and wild guesses. This marks an entire area of questions as off-topic.
Your question on Security of "How does hashing work?" is off topic here because it is vague and could easily be answered by reading wikipedia. We are not your research buddies, we're here to fix your computer problems. Asking how to make a program do something is fine, asking why it does it in the first place or how it does it, not so much.
Similarly SO expects you to have some kind of programming problem, not a "teach me programming" type question. Your questions appear to be "Why/how do I do X" as opposed to "How do I make X work"
Some SE sites are ambiguous and allow vague discussion type questions SU and SO do not.
What you consider ugly we consider clean, what you consider good we consider to be overly vague and your Homework.
One thing to take note of is the tooltip for the downvote arrow, "is not useful" and "does not show research effort" are two important points. While we like theoretical problems and puzzles, the sites themselves are more focused towards solving real problems you face.
Your current downvoted questions appear to be asking for us to find and provide solutions to rather vague problems.
The minecraft problem is more about restricting access to programs on computers, there are many tools on the internet for this and it is not up to us to find them for you.
Your problem with preinstalled Windows is completely vague and you're not actually telling us what you want, only that a laptop comes with Windows preinstalled and asking us what we recommend to do with it, I cannot see anything in that question telling me why that is a problem. What do you want us to help you fix? You say your copy of Windows is locked but not how or why. Many laptops and computers have Windows preinstalled but I do not see what you mean by "locked", are you talking about the Secure Boot feature or something else? Clarity is everything here.
Define your problem properly, then ask a specific question.