How does using a library qualify as reinventing the wheel? Not everything needs to be done in kernel space. User space is a lot more flexible - for instance, an

How does using a library qualify as reinventing the wheel? Not everything needs to be done in kernel space. User space is a lot more flexible - for instance, an application can decide to use LibreSSL instead of OpenSSL, but it can't change the IPsec implementation in the kernel.