For anyone reading this, this is terrible advice. The most important that you can do to keep your windows (if you insist on windows) computer secure is to keep it up to date.

This applies for any operating system. Security flaws are constantly being discovered and the security updates are those flaws being fixed.

It’s an older study but the thing security experts said was most important was installing security updates in a prompt manner.

The thing non experts said was important was having an antivirus.

https://www.tomshardware.com/news/security-experts-vs-non-experts,29665.html