That is a consequence of having parallelism - all mainstream pre-Rust memory safe languages with parallelism suffer from this issue, they are still generally regarded as memory safe. I don’t know where you got that Java does not have this issue, you need to know to use the parallelism-safe data types where necessary.
How is Go not memory safe? Having escape hatches does not count, all the safe languages have those.
Yep, reinvent it for educational purposes and then burn it with fire.
It’s neither with parts from both.
All the core tools are actually a single executable with many symlinks to it, which makes the distro very compact. This makes it very nice as a base for Docker images.
Don’t buy ASUS, they have a terrible security record. At this point I would trust only MikroTik and Ubiquiti.