Skhron on Nostr: I am somewhat biased towards certificates - I see them more as vendor's confirmation ...

I am somewhat biased towards certificates - I see them more as vendor's confirmation of yours' proficiency in using specific software/hardware in a way they expect you to.

As for Linux kernel and it's wide and extremely diverse ecosystem, there is no single entity, who are in charge of judging what is OK and what's not. IMO, closest to this position are Red Hat due to their contributions and enterprise services (Red Hat Enterpise Linux distro, it's components they've developed exclusively for it, testing environment like Fedora and CentOS Stream, OpenStack, Ansible...).