Millions of servers run on all variants of Linux distro and every month we find a dozen of security vulnerabilities.
Most of which only apply if you have local untrusted users or are running particular software.
You can give up if you like, but I still believe it's possible to set up secure systems.
That's a silly argument. Here is how I will rephrase it: don't use computer because computer software always has bugs. Millions of servers run on all variants of Linux distro and every month we find a dozen of security vulnerabilities. Even standards have bugs and unresolved items.