In the near term with a recent-enough BTF-enabled kernel, bpftool should be enough for an "ambitious" user to understand what objects are being run on a system.

Unfortunately, "ambitious" here meaning enough to actually understand more than just what eBPF is but also the significance of each hook, what effect the bpf program has (most eBPF programs are GPL-licensed), and which processes have access to these objects.

This is not easy, especially considering that the shape of eBPF changes with each kernel release.