Flatpaks are easier to use in most distros. If you’re using NixOS, then Nix of course. But if you want to do a lot of CLI stuff, then Nix may be better too.

AFAIK Solaris and Haiku don’t have an OOM Killer by default. malloc just fails if the kernel can’t provide enough memory.

I agree that Alpine Linux shouldn’t be recommended to newbies but I don’t like the explanation. Distros like Alpine Linux are good for the whole Linux ecosystem, as they avoid monoculture and bring diversity to the software, which in turn they foster competition. Like a biological ecosystem, betting everything into one particular specie is a recipe for disaster. Some examples: Glibc has found many bugs because musl did things differently, and it turned out that glibc was not following the standard (also musl had bugs on its own), GCC was stuck until Clang came out and developers started to prefer Clang,…