I'm aware, but your global audience is generally not. That's why I advise on name changes. You own your name, you can do anything to it. There are people from India with names so long that a byte overflows and there are people from Africa with exclamation marks (click sounds) in their names. I'm sure there's a great cultural heritage behind these names, but they're just impractical.
If I don't know how to pronounce a name, I am going to avoid you just a little bit more. I'm less likely to remember your name. I'll have to look it up to spell it right. Should I get into the unfortunate situation of having to pronounce it in public, I'm likely to embarrass myself.
In short, your name is a risk to me. A small risk, all things considered, but a risk nonetheless. It's causing me extra work. A small amount of extra work, but extra work nonetheless.
The thing is, it's not just me, it's almost everyone, even those who wouldn't dare admit it or those who are unconscious of it. All those tiny little negatives add up to a significant negative in your life. Studies show that "foreign-sounding" names lead to less job interviews, for instance, but it doesn't end there.
Of course, if you hate success (as is common in Poland) you might not be bothered by all of that. Sour grapes, but fair.
> Euboea depends on POSIX and X86 highly, therefore I thought about Euboea like about another text processing / computation language to be used in shell scripts making programming easier.
If that's the focus, your selling point should be something along these lines of "a simple programming language to create UNIX tools", because that's really what distinguishes it. I also think you can then give up on the whole "safety" aspect, because UNIX fundamentally is unsafe and "no access to files" becomes a limitation, not a feature.