It does a lot more than it's told and you know that
All different tasks under the umbrella of "install this software". I don't understand the relevance.
Ideally, yes. Whatever you want. Not whatever bad actors want.
So Windows will install malicious software and Linux won't...? Even if you tell it to? No.
The answer is the file extension doesn't do anything
Again I don't understand the relevance.
Yes huh
Just lying again. You'd have to go and search what words to type in first.
I don't know what you aren't understanding about this. All 3 OSs have package managers that function similarly. What I'm talking about is when the software is not available in the package manager....
You've really never used Windows before, have you? That's once again not how it works. Maybe give it a go and come back after you've got some experience.
You could make an argument for such a thing insofar as time is money. And like they say "Linux is free so long as your time is worth nothing."