Do you know how many of those are being caught by iocaine?
These are my stats for anubis (this is only UI requests - LemmyUI and Mlmym mostly, no federation or app usage in this). A total of about 600k requests. Weigh and Challenge are the options given a proof of work challenge to solve (weigh just means the rules for the user agent or whatever mean the challenge difficulty was adjusted, often to make it harder for suspicious requests).

Out of the challenges issued in this time period, around 11% were validated (so 89% of the weigh and challenge traffic was also denied in addition to "deny" which was denied without issuing a challenge due to rules).