eBPF is great, and we plan to support it as our collection mechanism, but not today and maybe not soon. When we wrote go-audit, there were few, (if any?), distros that had eBPF kernel support. Now Ubuntu 16.04 has support, as do many others, and that is great!
But..
Releasing a tool that will work for most people today is very different to releasing one that will work for most people in a couple of years. We are sharing this imperfect tool that uses an using an imperfect syscall monitoring mechanism, both of which were written by imperfect humans.
We have found plenty of problems with auditd during development (some real facepalm stuff, to be sure), but it also does many useful things. We have worked around limitations and very definitely stress tested it in our environment. A lot. A lot lot.
If you don't trust auditd, that's a totally valid opinion to hold. I welcome criticism of our approach, but a PSA that doesn't involve having testing our tool is rather unfair.