It was never meant to be, it's only providing a subset of the features openssl has.
>The OpenBSD people forked to LibreSSL which looked very promising (coming from people who make their main obsession about security) but seemed to quickly burn out at least on Linux hosts
In the beginning yes it was, they moved fast on cleaning up OpenSSL codebase. The problems began because it's not explicitly a goal to maintain OpenSSL compatibility, so distros had a huge maintenance burden patching things to work with it. Eventually the distros that were maintaining it (Void and Gentoo?) got tired of it and decided OpenSSL had gotten through the worst of its problems.
Then OpenSSL 3 dropped, once again making it annoying to patch for and introducing issues like this CVE. I think Alpine was discussing looking at LibreSSL again but I think that ship has sailed.