>There are plenty of people demonstrating that Anubis reduces bot traffic.
"Anubis reduces bot traffic" and "[the proof of work] is not stopping anyone" isn't contradictory, especially if anubis isn't being benchmarked against non-POW alternatives like IP/ASN bans, or tls fingerprinting.
"it's not stopping anyone" and "it is stopping some people" are mutually exclusive statements.