To people which don't understand the overall decision to create another system, I'll talk about at least one benefit to create a system that is not Linux: make software more simple and efficient. Do you really think that Linux is so great? Linux is a bloat system [1], POSIX is not so great as well (do you really read the WHOLE POSIX spec?).
It's important standards, it's important sometimes (SOMETIMES) compatibility. But not all this stuff defined in POSIX it's important. POSIX sucks sometimes [2], only GNU can be worse about being bloated [3].
Only users which don't touch in code can think that Linux, POSIX and GNU are entities following principles based in simplicity. Linux following Unix guidelines? This only can be a joke of Linus.
Creating custom software, maintaining and other stuff on things THAT YOU DON'T UNDERSTAND has a massive cost. As well, the cost to understand complex things, it's even worse.
Sometimes it's even more simple re-inventing the wheel than understand why a wheel was build with a fractal design [4].
[1] Linux LOC overtime https://www.linuxcounter.net/statistics/kernel
[2] POSIX has become outdated http://www.cs.columbia.edu/~vatlidak/resources/POSIXmagazine...
[3] Code inflation about /usr/bin/true https://pdfs.semanticscholar.org/a417/055105f9b3486c2ae7aec2...
[4] The Linux Programming Interface https://doc.lagout.org/programmation/unix/The%20Linux%20Prog... (that cover of book has a reason and yes: it is what you think)
It's important standards, it's important sometimes (SOMETIMES) compatibility. But not all this stuff defined in POSIX it's important. POSIX sucks sometimes [2], only GNU can be worse about being bloated [3].
Only users which don't touch in code can think that Linux, POSIX and GNU are entities following principles based in simplicity. Linux following Unix guidelines? This only can be a joke of Linus.
Creating custom software, maintaining and other stuff on things THAT YOU DON'T UNDERSTAND has a massive cost. As well, the cost to understand complex things, it's even worse.
Sometimes it's even more simple re-inventing the wheel than understand why a wheel was build with a fractal design [4].
[1] Linux LOC overtime https://www.linuxcounter.net/statistics/kernel
[2] POSIX has become outdated http://www.cs.columbia.edu/~vatlidak/resources/POSIXmagazine...
[3] Code inflation about /usr/bin/true https://pdfs.semanticscholar.org/a417/055105f9b3486c2ae7aec2...
[4] The Linux Programming Interface https://doc.lagout.org/programmation/unix/The%20Linux%20Prog... (that cover of book has a reason and yes: it is what you think)