I do not want to offend you, but if you do not understand something, it does not mean at all that it is superfluous. Given what people advise the OP, it is the absence of various programs and games that is desirable for a computer that conducts financial activities. Other than that, you won't believe how beautiful and convenient Linux can be, unlike Windows. It also has graphics to create a pleasant interface, although most of its users hardly need them.
I do not feel offended, we all have our habits. What I wanted to point out is that Julerz12 did not have his coins stolen because he used windows. Recommending him to switch to linux as a countermeasure is like advising a driver who had an accident in a toyota to buy a volvo because they're safer. 99% of the time it's not the car, it's the driver.
Ultimately it comes down to what you do on your computer, how you use it, not to the OS. The recent situation with lukedashjr can be used as an example.
It's great that Julerz likes his linux. If he decides to stay with it, good for him, I'm sure it will improve his security. That said, if you get hacked or get your coins stolen because of a keylogger, or address switcher, or whatever else, changing the OS should not be your first priority. The OS is not the reason you were targeted. Millions of people around the world use windows or iOS and never get anything stolen. I still have coins that I got in 2015 and never had a single security breach, despite using windows all the time.