SOLUSfiddler Although security might require technical skills at some point, the very large security issue people might be facing are only due to a lack of common sense / popular education.
It got very little to do with the operating system. For example I totally disagree with what you are saying here. Nowadays Windows isn't less secure than macOS or Linux for desktop use. The only reason you need an antivirus on windows is because it got 80% of the market share and thus is heavily targeted by evil people while linux got less than 2% on the desktop. If the market shares were the other way around, 80% of Linux running on desktop and less than 2% of windows, you would need an antivirus on linux but not on windows.
Also there are billion people using windows without much problems. Do you seriously believe the majority of the people who use computers are IT pros and you are the only exception?
Windows 10 update policy is the equivalent of a rolling release. Nothing really different from distributions like Solus.
The concerns about windows aren't about security but rather about privacy.
If you really want to learn without being very technical, simply learn about getting a healthier digital life
Always apply update
Don't install software from an untrusted source
Don't use unmaintained software
Don't accept strangers as friends on the social media
Don't open mail attachments received from unknown people
Don't visit suspicious sites
Don't use weak password, don't use the same passwords everywhere, don't share your passwords, etc.
Wonder why your bank send you a mail to request info about your personal data while they have secured channels to communicate with their customers
Also wonder why your bank obviously asked this trainee who can't write a sentence without spelling mistakes to write and send this mail without reviewing it
Ask yourself why the thing you want to buy is 80% cheaper on this totally unknown website than on the rest of the world
Don't run applications with elevated privileges when it's not necessary
Don't leave your wifi network unprotected
Don't connect to a public wifi without using a VPN
Don't store sensitive data on the cloud if it is not absolutely necessary
Encrypt your data (and backup them)
etc.
These kind of things have a MUCH bigger impact on digital security than tools like nmap & co which by the way are meant for IT professionals.