2. musl and uClibc are jack fuck shit compared to glibc. glibc is robust, versatile, lightwieght and secure.
3. Both pacman and apk-tools are far superior to the rusty ports used in all BSDs.
4. BSD userland is slow, limited functionality, too heavy (can't be used on mobile platforms) etc.
OpenBSD is not more secure then Linux, its actually less secure because they do not have anything like AppArmor or SELinux. They rely on the hopes of their OS being bug free so if it isn't, there's no layers of defence.
Also, their third party apps from ports are not audited while linux is. So the more apps you install, insecurity grows exponentially.
Plus like M$, they cover up security flaws and even allow the FBI to plant backdoors